diff options
Diffstat (limited to 'resolv/res_hconf.c')
| -rw-r--r-- | resolv/res_hconf.c | 221 |
1 files changed, 42 insertions, 179 deletions
diff --git a/resolv/res_hconf.c b/resolv/res_hconf.c index 91cd300482..f45888933f 100644 --- a/resolv/res_hconf.c +++ b/resolv/res_hconf.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1993, 1995-2003, 2004 Free Software Foundation, Inc. +/* Copyright (C) 1993, 1995-2005, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by David Mosberger (davidm@azstarnet.com). @@ -53,35 +53,34 @@ /* Environment vars that all user to override default behavior: */ #define ENV_HOSTCONF "RESOLV_HOST_CONF" -#define ENV_SERVORDER "RESOLV_SERV_ORDER" #define ENV_SPOOF "RESOLV_SPOOF_CHECK" #define ENV_TRIM_OVERR "RESOLV_OVERRIDE_TRIM_DOMAINS" #define ENV_TRIM_ADD "RESOLV_ADD_TRIM_DOMAINS" #define ENV_MULTI "RESOLV_MULTI" #define ENV_REORDER "RESOLV_REORDER" -static const char *arg_service_list (const char *, int, const char *, - unsigned int); -static const char *arg_trimdomain_list (const char *, int, const char *, - unsigned int); -static const char *arg_spoof (const char *, int, const char *, unsigned int); -static const char *arg_bool (const char *, int, const char *, unsigned int); +enum parse_cbs + { + CB_none, + CB_arg_trimdomain_list, + CB_arg_spoof, + CB_arg_bool + }; -static struct cmd +static const struct cmd { - const char *name; - const char *(*parse_args) (const char * filename, int line_num, - const char * args, unsigned int arg); + const char name[11]; + uint8_t cb; unsigned int arg; } cmd[] = { - {"order", arg_service_list, 0}, - {"trim", arg_trimdomain_list, 0}, - {"spoof", arg_spoof, 0}, - {"multi", arg_bool, HCONF_FLAG_MULTI}, - {"nospoof", arg_bool, HCONF_FLAG_SPOOF}, - {"spoofalert", arg_bool, HCONF_FLAG_SPOOFALERT}, - {"reorder", arg_bool, HCONF_FLAG_REORDER} + {"order", CB_none, 0}, + {"trim", CB_arg_trimdomain_list, 0}, + {"spoof", CB_arg_spoof, 0}, + {"multi", CB_arg_bool, HCONF_FLAG_MULTI}, + {"nospoof", CB_arg_bool, HCONF_FLAG_SPOOF}, + {"spoofalert", CB_arg_bool, HCONF_FLAG_SPOOFALERT}, + {"reorder", CB_arg_bool, HCONF_FLAG_REORDER} }; /* Structure containing the state. */ @@ -107,118 +106,7 @@ skip_string (const char *str) static const char * -arg_service_list (const char *fname, int line_num, const char *args, - unsigned int arg) -{ - enum Name_Service service; - const char *start; - size_t len; - size_t i; - static struct - { - const char * name; - enum Name_Service service; - } svcs[] = - { - {"bind", SERVICE_BIND}, - {"hosts", SERVICE_HOSTS}, - {"nis", SERVICE_NIS}, - }; - - do - { - start = args; - args = skip_string (args); - len = args - start; - - service = SERVICE_NONE; - for (i = 0; i < sizeof (svcs) / sizeof (svcs[0]); ++i) - { - if (__strncasecmp (start, svcs[i].name, len) == 0 - && len == strlen (svcs[i].name)) - { - service = svcs[i].service; - break; - } - } - if (service == SERVICE_NONE) - { - char *buf; - - if (__asprintf (&buf, - _("%s: line %d: expected service, found `%s'\n"), - fname, line_num, start) < 0) - return 0; - -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); - - free (buf); - return 0; - } - if (_res_hconf.num_services >= SERVICE_MAX) - { - char *buf; - - if (__asprintf (&buf, _("\ -%s: line %d: cannot specify more than %d services"), - fname, line_num, SERVICE_MAX) < 0) - return 0; - -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); - - free (buf); - return 0; - } - _res_hconf.service[_res_hconf.num_services++] = service; - - args = skip_ws (args); - switch (*args) - { - case ',': - case ';': - case ':': - args = skip_ws (++args); - if (!*args || *args == '#') - { - char *buf; - - if (__asprintf (&buf, _("\ -%s: line %d: list delimiter not followed by keyword"), - fname, line_num) < 0) - return 0; - -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); - - free (buf); - return 0; - } - default: - break; - } - } - while (*args && *args != '#'); - return args; -} - - -static const char * -arg_trimdomain_list (const char *fname, int line_num, const char *args, - unsigned int flag) +arg_trimdomain_list (const char *fname, int line_num, const char *args) { const char * start; size_t len; @@ -238,14 +126,9 @@ arg_trimdomain_list (const char *fname, int line_num, const char *args, fname, line_num, TRIMDOMAINS_MAX) < 0) return 0; -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); + __fxprintf (NULL, "%s", buf); - free (buf); + free (buf); return 0; } _res_hconf.trimdomain[_res_hconf.num_trimdomains++] = @@ -264,12 +147,7 @@ arg_trimdomain_list (const char *fname, int line_num, const char *args, fname, line_num) < 0) return 0; -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); + __fxprintf (NULL, "%s", buf); free (buf); return 0; @@ -284,7 +162,7 @@ arg_trimdomain_list (const char *fname, int line_num, const char *args, static const char * -arg_spoof (const char *fname, int line_num, const char *args, unsigned flag) +arg_spoof (const char *fname, int line_num, const char *args) { const char *start = args; size_t len; @@ -327,12 +205,7 @@ arg_bool (const char *fname, int line_num, const char *args, unsigned flag) fname, line_num, args) < 0) return 0; -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); + __fxprintf (NULL, "%s", buf); free (buf); return 0; @@ -345,7 +218,7 @@ static void parse_line (const char *fname, int line_num, const char *str) { const char *start; - struct cmd *c = 0; + const struct cmd *c = 0; size_t len; size_t i; @@ -375,12 +248,7 @@ parse_line (const char *fname, int line_num, const char *str) fname, line_num, start) < 0) return; -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); + __fxprintf (NULL, "%s", buf); free (buf); return; @@ -388,7 +256,17 @@ parse_line (const char *fname, int line_num, const char *str) /* process args: */ str = skip_ws (str); - str = (*c->parse_args) (fname, line_num, str, c->arg); + + if (c->cb == CB_arg_trimdomain_list) + str = arg_trimdomain_list (fname, line_num, str); + else if (c->cb == CB_arg_spoof) + str = arg_spoof (fname, line_num, str); + else if (c->cb == CB_arg_bool) + str = arg_bool (fname, line_num, str, c->arg); + else + /* Ignore the line. */ + return; + if (!str) return; @@ -405,12 +283,7 @@ parse_line (const char *fname, int line_num, const char *str) fname, line_num, str) < 0) break; -#ifdef USE_IN_LIBIO - if (_IO_fwide (stderr, 0) > 0) - __fwprintf (stderr, L"%s", buf); - else -#endif - fputs (buf, stderr); + __fxprintf (NULL, "%s", buf); free (buf); } @@ -436,10 +309,7 @@ do_init (void) hconf_name = _PATH_HOSTCONF; fp = fopen (hconf_name, "rc"); - if (!fp) - /* make up something reasonable: */ - _res_hconf.service[_res_hconf.num_services++] = SERVICE_BIND; - else + if (fp) { /* No threads using this stream. */ __fsetlocking (fp, FSETLOCKING_BYCALLER); @@ -453,16 +323,9 @@ do_init (void) fclose (fp); } - envval = getenv (ENV_SERVORDER); - if (envval) - { - _res_hconf.num_services = 0; - arg_service_list (ENV_SERVORDER, 1, envval, 0); - } - envval = getenv (ENV_SPOOF); if (envval) - arg_spoof (ENV_SPOOF, 1, envval, 0); + arg_spoof (ENV_SPOOF, 1, envval); envval = getenv (ENV_MULTI); if (envval) @@ -474,13 +337,13 @@ do_init (void) envval = getenv (ENV_TRIM_ADD); if (envval) - arg_trimdomain_list (ENV_TRIM_ADD, 1, envval, 0); + arg_trimdomain_list (ENV_TRIM_ADD, 1, envval); envval = getenv (ENV_TRIM_OVERR); if (envval) { _res_hconf.num_trimdomains = 0; - arg_trimdomain_list (ENV_TRIM_OVERR, 1, envval, 0); + arg_trimdomain_list (ENV_TRIM_OVERR, 1, envval); } _res_hconf.initialized = 1; |