diff options
Diffstat (limited to 'networking/libiproute/rt_names.c')
| -rw-r--r-- | networking/libiproute/rt_names.c | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/networking/libiproute/rt_names.c b/networking/libiproute/rt_names.c new file mode 100644 index 0000000..e4d1061 --- /dev/null +++ b/networking/libiproute/rt_names.c @@ -0,0 +1,349 @@ +/* vi: set sw=4 ts=4: */ +/* + * rt_names.c rtnetlink names DB. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> + */ + +#include "libbb.h" +#include "rt_names.h" + +/* so far all callers have size == 256 */ +#define rtnl_tab_initialize(file, tab, size) rtnl_tab_initialize(file, tab) +#define size 256 +static void rtnl_tab_initialize(const char *file, const char **tab, int size) +{ + char *token[2]; + parser_t *parser = config_open2(file, fopen_for_read); + while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) { + int id = bb_strtou(token[0], NULL, 0); + if (id < 0 || id > size) { + bb_error_msg("database %s is corrupted at line %d", + file, parser->lineno); + break; + } + tab[id] = xstrdup(token[1]); + } + config_close(parser); +} +#undef size + +static const char **rtnl_rtprot_tab; /* [256] */ + +static void rtnl_rtprot_initialize(void) +{ + static const char *const init_tab[] = { + "none", + "redirect", + "kernel", + "boot", + "static", + NULL, + NULL, + NULL, + "gated", + "ra", + "mrt", + "zebra", + "bird", + }; + if (rtnl_rtprot_tab) return; + rtnl_rtprot_tab = xzalloc(256 * sizeof(rtnl_rtprot_tab[0])); + memcpy(rtnl_rtprot_tab, init_tab, sizeof(init_tab)); + rtnl_tab_initialize("/etc/iproute2/rt_protos", + rtnl_rtprot_tab, 256); +} + + +const char* rtnl_rtprot_n2a(int id, char *buf, int len) +{ + if (id < 0 || id >= 256) { + snprintf(buf, len, "%d", id); + return buf; + } + + rtnl_rtprot_initialize(); + + if (rtnl_rtprot_tab[id]) + return rtnl_rtprot_tab[id]; + snprintf(buf, len, "%d", id); + return buf; +} + +int rtnl_rtprot_a2n(uint32_t *id, char *arg) +{ + static const char *cache = NULL; + static unsigned long res; + int i; + + if (cache && strcmp(cache, arg) == 0) { + *id = res; + return 0; + } + + rtnl_rtprot_initialize(); + + for (i = 0; i < 256; i++) { + if (rtnl_rtprot_tab[i] && + strcmp(rtnl_rtprot_tab[i], arg) == 0) { + cache = rtnl_rtprot_tab[i]; + res = i; + *id = res; + return 0; + } + } + + res = bb_strtoul(arg, NULL, 0); + if (errno || res > 255) + return -1; + *id = res; + return 0; +} + + +static const char **rtnl_rtscope_tab; /* [256] */ + +static void rtnl_rtscope_initialize(void) +{ + if (rtnl_rtscope_tab) return; + rtnl_rtscope_tab = xzalloc(256 * sizeof(rtnl_rtscope_tab[0])); + rtnl_rtscope_tab[0] = "global"; + rtnl_rtscope_tab[255] = "nowhere"; + rtnl_rtscope_tab[254] = "host"; + rtnl_rtscope_tab[253] = "link"; + rtnl_rtscope_tab[200] = "site"; + rtnl_tab_initialize("/etc/iproute2/rt_scopes", + rtnl_rtscope_tab, 256); +} + + +const char* rtnl_rtscope_n2a(int id, char *buf, int len) +{ + if (id < 0 || id >= 256) { + snprintf(buf, len, "%d", id); + return buf; + } + + rtnl_rtscope_initialize(); + + if (rtnl_rtscope_tab[id]) + return rtnl_rtscope_tab[id]; + snprintf(buf, len, "%d", id); + return buf; +} + +int rtnl_rtscope_a2n(uint32_t *id, char *arg) +{ + static const char *cache = NULL; + static unsigned long res; + int i; + + if (cache && strcmp(cache, arg) == 0) { + *id = res; + return 0; + } + + rtnl_rtscope_initialize(); + + for (i = 0; i < 256; i++) { + if (rtnl_rtscope_tab[i] && + strcmp(rtnl_rtscope_tab[i], arg) == 0) { + cache = rtnl_rtscope_tab[i]; + res = i; + *id = res; + return 0; + } + } + + res = bb_strtoul(arg, NULL, 0); + if (errno || res > 255) + return -1; + *id = res; + return 0; +} + + +static const char **rtnl_rtrealm_tab; /* [256] */ + +static void rtnl_rtrealm_initialize(void) +{ + if (rtnl_rtrealm_tab) return; + rtnl_rtrealm_tab = xzalloc(256 * sizeof(rtnl_rtrealm_tab[0])); + rtnl_rtrealm_tab[0] = "unknown"; + rtnl_tab_initialize("/etc/iproute2/rt_realms", + rtnl_rtrealm_tab, 256); +} + + +int rtnl_rtrealm_a2n(uint32_t *id, char *arg) +{ + static const char *cache = NULL; + static unsigned long res; + int i; + + if (cache && strcmp(cache, arg) == 0) { + *id = res; + return 0; + } + + rtnl_rtrealm_initialize(); + + for (i = 0; i < 256; i++) { + if (rtnl_rtrealm_tab[i] && + strcmp(rtnl_rtrealm_tab[i], arg) == 0) { + cache = rtnl_rtrealm_tab[i]; + res = i; + *id = res; + return 0; + } + } + + res = bb_strtoul(arg, NULL, 0); + if (errno || res > 255) + return -1; + *id = res; + return 0; +} + +#if ENABLE_FEATURE_IP_RULE +const char* rtnl_rtrealm_n2a(int id, char *buf, int len) +{ + if (id < 0 || id >= 256) { + snprintf(buf, len, "%d", id); + return buf; + } + + rtnl_rtrealm_initialize(); + + if (rtnl_rtrealm_tab[id]) + return rtnl_rtrealm_tab[id]; + snprintf(buf, len, "%d", id); + return buf; +} +#endif + + +static const char **rtnl_rtdsfield_tab; /* [256] */ + +static void rtnl_rtdsfield_initialize(void) +{ + if (rtnl_rtdsfield_tab) return; + rtnl_rtdsfield_tab = xzalloc(256 * sizeof(rtnl_rtdsfield_tab[0])); + rtnl_rtdsfield_tab[0] = "0"; + rtnl_tab_initialize("/etc/iproute2/rt_dsfield", + rtnl_rtdsfield_tab, 256); +} + + +const char * rtnl_dsfield_n2a(int id, char *buf, int len) +{ + if (id < 0 || id >= 256) { + snprintf(buf, len, "%d", id); + return buf; + } + + rtnl_rtdsfield_initialize(); + + if (rtnl_rtdsfield_tab[id]) + return rtnl_rtdsfield_tab[id]; + snprintf(buf, len, "0x%02x", id); + return buf; +} + + +int rtnl_dsfield_a2n(uint32_t *id, char *arg) +{ + static const char *cache = NULL; + static unsigned long res; + int i; + + if (cache && strcmp(cache, arg) == 0) { + *id = res; + return 0; + } + + rtnl_rtdsfield_initialize(); + + for (i = 0; i < 256; i++) { + if (rtnl_rtdsfield_tab[i] && + strcmp(rtnl_rtdsfield_tab[i], arg) == 0) { + cache = rtnl_rtdsfield_tab[i]; + res = i; + *id = res; + return 0; + } + } + + res = bb_strtoul(arg, NULL, 16); + if (errno || res > 255) + return -1; + *id = res; + return 0; +} + + +#if ENABLE_FEATURE_IP_RULE +static const char **rtnl_rttable_tab; /* [256] */ + +static void rtnl_rttable_initialize(void) +{ + if (rtnl_rtdsfield_tab) return; + rtnl_rttable_tab = xzalloc(256 * sizeof(rtnl_rttable_tab[0])); + rtnl_rttable_tab[0] = "unspec"; + rtnl_rttable_tab[255] = "local"; + rtnl_rttable_tab[254] = "main"; + rtnl_rttable_tab[253] = "default"; + rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab, 256); +} + + +const char *rtnl_rttable_n2a(int id, char *buf, int len) +{ + if (id < 0 || id >= 256) { + snprintf(buf, len, "%d", id); + return buf; + } + + rtnl_rttable_initialize(); + + if (rtnl_rttable_tab[id]) + return rtnl_rttable_tab[id]; + snprintf(buf, len, "%d", id); + return buf; +} + +int rtnl_rttable_a2n(uint32_t * id, char *arg) +{ + static char *cache = NULL; + static unsigned long res; + int i; + + if (cache && strcmp(cache, arg) == 0) { + *id = res; + return 0; + } + + rtnl_rttable_initialize(); + + for (i = 0; i < 256; i++) { + if (rtnl_rttable_tab[i] && strcmp(rtnl_rttable_tab[i], arg) == 0) { + cache = (char*)rtnl_rttable_tab[i]; + res = i; + *id = res; + return 0; + } + } + + i = bb_strtoul(arg, NULL, 0); + if (errno || i > 255) + return -1; + *id = i; + return 0; +} + +#endif |