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net-snmp 5.7
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00001 /* 00002 * agent_read_config.c 00003 */ 00004 00005 #include <net-snmp/net-snmp-config.h> 00006 #include <net-snmp/net-snmp-features.h> 00007 00008 #include <sys/types.h> 00009 #if HAVE_STDLIB_H 00010 #include <stdlib.h> 00011 #endif 00012 #if HAVE_STRING_H 00013 #include <string.h> 00014 #else 00015 #include <strings.h> 00016 #endif 00017 #include <stdio.h> 00018 #include <ctype.h> 00019 #include <errno.h> 00020 00021 #if TIME_WITH_SYS_TIME 00022 # include <sys/time.h> 00023 # include <time.h> 00024 #else 00025 # if HAVE_SYS_TIME_H 00026 # include <sys/time.h> 00027 # else 00028 # include <time.h> 00029 # endif 00030 #endif 00031 #if HAVE_NETINET_IN_H 00032 #include <netinet/in.h> 00033 #endif 00034 #if HAVE_NETINET_IN_SYSTM_H 00035 #include <netinet/in_systm.h> 00036 #endif 00037 #if HAVE_NETINET_IP_H 00038 #include <netinet/ip.h> 00039 #endif 00040 #ifdef NETSNMP_ENABLE_IPV6 00041 #if HAVE_NETINET_IP6_H 00042 #include <netinet/ip6.h> 00043 #endif 00044 #endif 00045 #if HAVE_SYS_QUEUE_H 00046 #include <sys/queue.h> 00047 #endif 00048 #if HAVE_SYS_SOCKET_H 00049 #include <sys/socket.h> 00050 #if HAVE_SYS_SOCKETVAR_H 00051 #ifndef dynix 00052 #include <sys/socketvar.h> 00053 #else 00054 #include <sys/param.h> 00055 #endif 00056 #endif 00057 #endif 00058 #if HAVE_SYS_STREAM_H 00059 # ifdef sysv5UnixWare7 00060 # define _KMEMUSER 1 /* <sys/stream.h> needs this for queue_t */ 00061 # endif 00062 #include <sys/stream.h> 00063 #endif 00064 #if HAVE_NET_ROUTE_H 00065 #include <net/route.h> 00066 #endif 00067 #if HAVE_NETINET_IP_VAR_H 00068 #include <netinet/ip_var.h> 00069 #endif 00070 #ifdef NETSNMP_ENABLE_IPV6 00071 #if HAVE_NETNETSNMP_ENABLE_IPV6_IP6_VAR_H 00072 #include <netinet6/ip6_var.h> 00073 #endif 00074 #endif 00075 #if HAVE_NETINET_IN_PCB_H 00076 #include <netinet/in_pcb.h> 00077 #endif 00078 #if HAVE_INET_MIB2_H 00079 #include <inet/mib2.h> 00080 #endif 00081 00082 #if HAVE_UNISTD_H 00083 #include <unistd.h> 00084 #endif 00085 #ifdef HAVE_PWD_H 00086 #include <pwd.h> 00087 #endif 00088 #ifdef HAVE_GRP_H 00089 #include <grp.h> 00090 #endif 00091 00092 #include <net-snmp/net-snmp-includes.h> 00093 #include <net-snmp/agent/net-snmp-agent-includes.h> 00094 00095 #include "mibgroup/struct.h" 00096 #include <net-snmp/agent/agent_trap.h> 00097 #include "snmpd.h" 00098 #include <net-snmp/agent/agent_callbacks.h> 00099 #include <net-snmp/agent/table.h> 00100 #include <net-snmp/agent/table_iterator.h> 00101 #include <net-snmp/agent/table_data.h> 00102 #include <net-snmp/agent/table_dataset.h> 00103 #include "agent_module_includes.h" 00104 #include "mib_module_includes.h" 00105 00106 netsnmp_feature_child_of(agent_read_config_all, libnetsnmpagent) 00107 00108 netsnmp_feature_child_of(snmpd_unregister_config_handler, agent_read_config_all) 00109 00110 #ifdef HAVE_UNISTD_H 00111 void 00112 snmpd_set_agent_user(const char *token, char *cptr) 00113 { 00114 #if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H) 00115 struct passwd *info; 00116 #endif 00117 00118 if (cptr[0] == '#') { 00119 char *ecp; 00120 int uid; 00121 uid = strtoul(cptr + 1, &ecp, 10); 00122 if (*ecp != 0) { 00123 config_perror("Bad number"); 00124 } else { 00125 netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID, 00126 NETSNMP_DS_AGENT_USERID, uid); 00127 } 00128 } 00129 #if defined(HAVE_GETPWNAM) && defined(HAVE_PWD_H) 00130 else if ((info = getpwnam(cptr)) != NULL) { 00131 netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID, 00132 NETSNMP_DS_AGENT_USERID, info->pw_uid); 00133 } else { 00134 config_perror("User not found in passwd database"); 00135 } 00136 endpwent(); 00137 #endif 00138 } 00139 00140 void 00141 snmpd_set_agent_group(const char *token, char *cptr) 00142 { 00143 #if defined(HAVE_GETGRNAM) && defined(HAVE_GRP_H) 00144 struct group *info; 00145 #endif 00146 00147 if (cptr[0] == '#') { 00148 char *ecp; 00149 int gid = strtoul(cptr + 1, &ecp, 10); 00150 if (*ecp != 0) { 00151 config_perror("Bad number"); 00152 } else { 00153 netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID, 00154 NETSNMP_DS_AGENT_GROUPID, gid); 00155 } 00156 } 00157 #if defined(HAVE_GETGRNAM) && defined(HAVE_GRP_H) 00158 else if ((info = getgrnam(cptr)) != NULL) { 00159 netsnmp_ds_set_int(NETSNMP_DS_APPLICATION_ID, 00160 NETSNMP_DS_AGENT_GROUPID, info->gr_gid); 00161 } else { 00162 config_perror("Group not found in group database"); 00163 } 00164 endpwent(); 00165 #endif 00166 } 00167 #endif 00168 00169 #ifndef NETSNMP_NO_LISTEN_SUPPORT 00170 void 00171 snmpd_set_agent_address(const char *token, char *cptr) 00172 { 00173 char buf[SPRINT_MAX_LEN]; 00174 char *ptr; 00175 00176 /* 00177 * has something been specified before? 00178 */ 00179 ptr = netsnmp_ds_get_string(NETSNMP_DS_APPLICATION_ID, 00180 NETSNMP_DS_AGENT_PORTS); 00181 00182 if (ptr) { 00183 /* 00184 * append to the older specification string 00185 */ 00186 snprintf(buf, SPRINT_MAX_LEN, "%s,%s", ptr, cptr); 00187 } else { 00188 strncpy(buf, cptr, SPRINT_MAX_LEN); 00189 } 00190 00191 DEBUGMSGTL(("snmpd_ports", "port spec: %s\n", buf)); 00192 netsnmp_ds_set_string(NETSNMP_DS_APPLICATION_ID, 00193 NETSNMP_DS_AGENT_PORTS, buf); 00194 } 00195 #endif /* NETSNMP_NO_LISTEN_SUPPORT */ 00196 00197 void 00198 init_agent_read_config(const char *app) 00199 { 00200 if (app != NULL) { 00201 netsnmp_ds_set_string(NETSNMP_DS_LIBRARY_ID, 00202 NETSNMP_DS_LIB_APPTYPE, app); 00203 } else { 00204 app = netsnmp_ds_get_string(NETSNMP_DS_LIBRARY_ID, 00205 NETSNMP_DS_LIB_APPTYPE); 00206 } 00207 00208 register_app_config_handler("authtrapenable", 00209 snmpd_parse_config_authtrap, NULL, 00210 "1 | 2\t\t(1 = enable, 2 = disable)"); 00211 register_app_config_handler("pauthtrapenable", 00212 snmpd_parse_config_authtrap, NULL, NULL); 00213 00214 00215 if (netsnmp_ds_get_boolean(NETSNMP_DS_APPLICATION_ID, 00216 NETSNMP_DS_AGENT_ROLE) == MASTER_AGENT) { 00217 #ifndef NETSNMP_DISABLE_SNMPV1 00218 register_app_config_handler("trapsink", 00219 snmpd_parse_config_trapsink, 00220 snmpd_free_trapsinks, 00221 "host [community] [port]"); 00222 #endif 00223 #ifndef NETSNMP_DISABLE_SNMPV2C 00224 register_app_config_handler("trap2sink", 00225 snmpd_parse_config_trap2sink, 00226 snmpd_free_trapsinks, 00227 "host [community] [port]"); 00228 register_app_config_handler("informsink", 00229 snmpd_parse_config_informsink, 00230 snmpd_free_trapsinks, 00231 "host [community] [port]"); 00232 #endif 00233 register_app_config_handler("trapsess", 00234 snmpd_parse_config_trapsess, 00235 snmpd_free_trapsinks, 00236 "[snmpcmdargs] host"); 00237 } 00238 #if !defined(NETSNMP_DISABLE_SNMPV1) || !defined(NETSNMP_DISABLE_SNMPV2C) 00239 register_app_config_handler("trapcommunity", 00240 snmpd_parse_config_trapcommunity, 00241 snmpd_free_trapcommunity, 00242 "community-string"); 00243 #endif /* support for community based SNMP */ 00244 netsnmp_ds_register_config(ASN_OCTET_STR, app, "v1trapaddress", 00245 NETSNMP_DS_APPLICATION_ID, 00246 NETSNMP_DS_AGENT_TRAP_ADDR); 00247 #ifdef HAVE_UNISTD_H 00248 register_app_config_handler("agentuser", 00249 snmpd_set_agent_user, NULL, "userid"); 00250 register_app_config_handler("agentgroup", 00251 snmpd_set_agent_group, NULL, "groupid"); 00252 #endif 00253 #ifndef NETSNMP_NO_LISTEN_SUPPORT 00254 register_app_config_handler("agentaddress", 00255 snmpd_set_agent_address, NULL, 00256 "SNMP bind address"); 00257 #endif /* NETSNMP_NO_LISTEN_SUPPORT */ 00258 netsnmp_ds_register_config(ASN_BOOLEAN, app, "quit", 00259 NETSNMP_DS_APPLICATION_ID, 00260 NETSNMP_DS_AGENT_QUIT_IMMEDIATELY); 00261 netsnmp_ds_register_config(ASN_BOOLEAN, app, "leave_pidfile", 00262 NETSNMP_DS_APPLICATION_ID, 00263 NETSNMP_DS_AGENT_LEAVE_PIDFILE); 00264 netsnmp_ds_register_config(ASN_BOOLEAN, app, "dontLogTCPWrappersConnects", 00265 NETSNMP_DS_APPLICATION_ID, 00266 NETSNMP_DS_AGENT_DONT_LOG_TCPWRAPPERS_CONNECTS); 00267 netsnmp_ds_register_config(ASN_INTEGER, app, "maxGetbulkRepeats", 00268 NETSNMP_DS_APPLICATION_ID, 00269 NETSNMP_DS_AGENT_MAX_GETBULKREPEATS); 00270 netsnmp_ds_register_config(ASN_INTEGER, app, "maxGetbulkResponses", 00271 NETSNMP_DS_APPLICATION_ID, 00272 NETSNMP_DS_AGENT_MAX_GETBULKRESPONSES); 00273 netsnmp_init_handler_conf(); 00274 00275 #include "agent_module_dot_conf.h" 00276 #include "mib_module_dot_conf.h" 00277 #ifdef TESTING 00278 print_config_handlers(); 00279 #endif 00280 } 00281 00282 void 00283 update_config(void) 00284 { 00285 snmp_call_callbacks(SNMP_CALLBACK_APPLICATION, 00286 SNMPD_CALLBACK_PRE_UPDATE_CONFIG, NULL); 00287 free_config(); 00288 read_configs(); 00289 } 00290 00291 00292 void 00293 snmpd_register_config_handler(const char *token, 00294 void (*parser) (const char *, char *), 00295 void (*releaser) (void), const char *help) 00296 { 00297 DEBUGMSGTL(("snmpd_register_app_config_handler", 00298 "registering .conf token for \"%s\"\n", token)); 00299 register_app_config_handler(token, parser, releaser, help); 00300 } 00301 00302 void 00303 snmpd_register_const_config_handler(const char *token, 00304 void (*parser) (const char *, const char *), 00305 void (*releaser) (void), const char *help) 00306 { 00307 DEBUGMSGTL(("snmpd_register_app_config_handler", 00308 "registering .conf token for \"%s\"\n", token)); 00309 register_app_config_handler(token, (void(*)(const char *, char *))parser, 00310 releaser, help); 00311 } 00312 00313 #ifdef NETSNMP_FEATURE_REQUIRE_SNMPD_UNREGISTER_CONFIG_HANDLER 00314 netsnmp_feature_require(unregister_app_config_handler) 00315 #endif /* NETSNMP_FEATURE_REQUIRE_SNMPD_UNREGISTER_CONFIG_HANDLER */ 00316 00317 #ifndef NETSNMP_FEATURE_REMOVE_SNMPD_UNREGISTER_CONFIG_HANDLER 00318 void 00319 snmpd_unregister_config_handler(const char *token) 00320 { 00321 unregister_app_config_handler(token); 00322 } 00323 #endif /* NETSNMP_FEATURE_REMOVE_SNMPD_UNREGISTER_CONFIG_HANDLER */ 00324 00325 /* 00326 * this function is intended for use by mib-modules to store permenant 00327 * configuration information generated by sets or persistent counters 00328 */ 00329 void 00330 snmpd_store_config(const char *line) 00331 { 00332 read_app_config_store(line); 00333 }
1.7.4