--- /dev/null
+/* ulogd_PGSQL.c, Version $Revision: 6404 $
+ *
+ * ulogd output plugin for logging to a PGSQL database
+ *
+ * (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
+ * This software is distributed under the terms of GNU GPL
+ *
+ * This plugin is based on the MySQL plugin made by Harald Welte.
+ * The support PostgreSQL were made by Jakab Laszlo.
+ *
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <arpa/inet.h>
+#include <ulogd/ulogd.h>
+#include <ulogd/conffile.h>
+#include <libpq-fe.h>
+
+
+#ifdef DEBUG_PGSQL
+#define DEBUGP(x, args...) fprintf(stderr, x, ## args)
+#else
+#define DEBUGP(x, args...)
+#endif
+
+struct _field {
+ char name[ULOGD_MAX_KEYLEN];
+ unsigned int id;
+ struct _field *next;
+};
+
+/* the database handle we are using */
+static PGconn *dbh;
+
+/* a linked list of the fields the table has */
+static struct _field *fields;
+
+/* buffer for our insert statement */
+static char *stmt;
+
+/* pointer to the beginning of the "VALUES" part */
+static char *stmt_val;
+
+/* pointer to current inser position in statement */
+static char *stmt_ins;
+
+/* our configuration directives */
+static config_entry_t db_ce = {
+ .key = "db",
+ .type = CONFIG_TYPE_STRING,
+ .options = CONFIG_OPT_MANDATORY,
+};
+
+static config_entry_t host_ce = {
+ .next = &db_ce,
+ .key = "host",
+ .type = CONFIG_TYPE_STRING,
+ .options = CONFIG_OPT_NONE,
+};
+
+static config_entry_t user_ce = {
+ .next = &host_ce,
+ .key = "user",
+ .type = CONFIG_TYPE_STRING,
+ .options = CONFIG_OPT_MANDATORY,
+};
+
+static config_entry_t pass_ce = {
+ .next = &user_ce,
+ .key = "pass",
+ .type = CONFIG_TYPE_STRING,
+ .options = CONFIG_OPT_NONE,
+};
+
+static config_entry_t table_ce = {
+ .next = &pass_ce,
+ .key = "table",
+ .type = CONFIG_TYPE_STRING,
+ .options = CONFIG_OPT_MANDATORY,
+};
+
+static config_entry_t schema_ce = {
+ .next = &table_ce,
+ .key = "schema",
+ .type = CONFIG_TYPE_STRING,
+ .options = CONFIG_OPT_NONE,
+ .u = { .string = "public" },
+};
+
+static config_entry_t port_ce = {
+ .next = &schema_ce,
+ .key = "port",
+ .type = CONFIG_TYPE_INT,
+ .options = CONFIG_OPT_NONE,
+};
+
+static unsigned char pgsql_have_schemas;
+
+/* our main output function, called by ulogd */
+static int pgsql_output(ulog_iret_t *result)
+{
+ struct _field *f;
+ ulog_iret_t *res;
+ PGresult *pgres;
+#ifdef IP_AS_STRING
+ char *tmpstr; /* need this for --log-ip-as-string */
+ struct in_addr addr;
+#endif
+
+ stmt_ins = stmt_val;
+
+ for (f = fields; f; f = f->next) {
+ res = keyh_getres(f->id);
+
+ if (!res) {
+ ulogd_log(ULOGD_NOTICE,
+ "no result for %s ?!?\n", f->name);
+ }
+
+ if (!res || !IS_VALID((*res))) {
+ /* no result, we have to fake something */
+ sprintf(stmt_ins, "NULL,");
+ stmt_ins = stmt + strlen(stmt);
+ continue;
+ }
+
+ switch (res->type) {
+ case ULOGD_RET_INT8:
+ sprintf(stmt_ins, "%d,", res->value.i8);
+ break;
+ case ULOGD_RET_INT16:
+ sprintf(stmt_ins, "%d,", res->value.i16);
+ break;
+ case ULOGD_RET_INT32:
+ sprintf(stmt_ins, "%d,", res->value.i32);
+ break;
+ case ULOGD_RET_INT64:
+ sprintf(stmt_ins, "%lld,", res->value.i64);
+ break;
+ case ULOGD_RET_UINT8:
+ sprintf(stmt_ins, "%u,", res->value.ui8);
+ break;
+ case ULOGD_RET_UINT16:
+ sprintf(stmt_ins, "%u,", res->value.ui16);
+ break;
+ case ULOGD_RET_IPADDR:
+#ifdef IP_AS_STRING
+ *stmt_ins++ = '\'';
+ memset(&addr, 0, sizeof(addr));
+ addr.s_addr = ntohl(res->value.ui32);
+ tmpstr = (char *)inet_ntoa(addr);
+ PQescapeString(stmt_ins,tmpstr,strlen(tmpstr));
+ stmt_ins = stmt + strlen(stmt);
+ sprintf(stmt_ins, "',");
+ break;
+#endif /* IP_AS_STRING */
+ /* EVIL: fallthrough when logging IP as
+ * u_int32_t */
+
+ case ULOGD_RET_UINT32:
+ sprintf(stmt_ins, "%u,", res->value.ui32);
+ break;
+ case ULOGD_RET_UINT64:
+ sprintf(stmt_ins, "%llu,", res->value.ui64);
+ break;
+ case ULOGD_RET_BOOL:
+ sprintf(stmt_ins, "'%d',", res->value.b);
+ break;
+ case ULOGD_RET_STRING:
+ *stmt_ins++ = '\'';
+ PQescapeString(stmt_ins,res->value.ptr,strlen(res->value.ptr));
+ stmt_ins = stmt + strlen(stmt);
+ sprintf(stmt_ins, "',");
+ break;
+ case ULOGD_RET_RAW:
+ ulogd_log(ULOGD_NOTICE,"%s: pgsql doesn't support type RAW\n",res->key);
+ sprintf(stmt_ins, "NULL,");
+ break;
+ default:
+ ulogd_log(ULOGD_NOTICE,
+ "unknown type %d for %s\n",
+ res->type, res->key);
+ break;
+ }
+ stmt_ins = stmt + strlen(stmt);
+ }
+ *(stmt_ins - 1) = ')';
+ DEBUGP("stmt=#%s#\n", stmt);
+
+ /* now we have created our statement, insert it */
+ /* Added code by Jaki */
+ pgres = PQexec(dbh, stmt);
+ if(!pgres || PQresultStatus(pgres) != PGRES_COMMAND_OK) {
+ ulogd_log(ULOGD_ERROR, "sql error during insert: %s\n",
+ PQresultErrorMessage(pgres));
+ return 1;
+ }
+
+ PQclear(pgres);
+
+ return 0;
+}
+
+#define PGSQL_HAVE_NAMESPACE_TEMPLATE "SELECT nspname FROM pg_namespace n WHERE n.nspname='%s'"
+
+/* Determine if server support schemas */
+static int pgsql_namespace(void) {
+ PGresult *result;
+ char pgbuf[strlen(PGSQL_HAVE_NAMESPACE_TEMPLATE)+strlen(schema_ce.u.string)+1];
+
+ if (!dbh)
+ return 1;
+
+ sprintf(pgbuf, PGSQL_HAVE_NAMESPACE_TEMPLATE, schema_ce.u.string);
+ ulogd_log(ULOGD_DEBUG, "%s\n", pgbuf);
+
+ result = PQexec(dbh, pgbuf);
+ if (!result) {
+ ulogd_log(ULOGD_DEBUG, "\n result false");
+ return 1;
+ }
+
+ if (PQresultStatus(result) == PGRES_TUPLES_OK) {
+ ulogd_log(ULOGD_DEBUG, "using schema %s\n", schema_ce.u.string);
+ pgsql_have_schemas = 1;
+ } else {
+ pgsql_have_schemas = 0;
+ }
+
+ PQclear(result);
+
+ return 0;
+}
+
+#define PGSQL_INSERTTEMPL "insert into X (Y) values (Z)"
+#define PGSQL_VALSIZE 100
+
+/* create the static part of our insert statement */
+static int pgsql_createstmt(void)
+{
+ struct _field *f;
+ unsigned int size;
+ char buf[ULOGD_MAX_KEYLEN];
+ char *underscore;
+
+ if (stmt) {
+ ulogd_log(ULOGD_NOTICE, "createstmt called, but stmt"
+ " already existing\n");
+ return 1;
+ }
+
+ /* caclulate the size for the insert statement */
+ size = strlen(PGSQL_INSERTTEMPL) + strlen(table_ce.u.string) + strlen(schema_ce.u.string) + 1;
+
+ for (f = fields; f; f = f->next) {
+ /* we need space for the key and a comma, as well as
+ * enough space for the values */
+ size += strlen(f->name) + 1 + PGSQL_VALSIZE;
+ }
+
+ ulogd_log(ULOGD_DEBUG, "allocating %u bytes for statement\n", size);
+
+ stmt = (char *) malloc(size);
+
+ if (!stmt) {
+ ulogd_log(ULOGD_ERROR, "OOM!\n");
+ return 1;
+ }
+
+ if (pgsql_have_schemas) {
+ sprintf(stmt, "insert into %s.%s (", schema_ce.u.string, table_ce.u.string);
+ } else {
+ sprintf(stmt, "insert into %s (", table_ce.u.string);
+ }
+
+ stmt_val = stmt + strlen(stmt);
+
+ for (f = fields; f; f = f->next) {
+ strncpy(buf, f->name, ULOGD_MAX_KEYLEN);
+ while ((underscore = strchr(buf, '.')))
+ *underscore = '_';
+ sprintf(stmt_val, "%s,", buf);
+ stmt_val = stmt + strlen(stmt);
+ }
+ *(stmt_val - 1) = ')';
+
+ sprintf(stmt_val, " values (");
+ stmt_val = stmt + strlen(stmt);
+
+ ulogd_log(ULOGD_DEBUG, "stmt='%s'\n", stmt);
+
+ return 0;
+}
+
+#define PGSQL_GETCOLUMN_TEMPLATE "SELECT a.attname FROM pg_class c, pg_attribute a WHERE c.relname ='%s' AND a.attnum>0 AND a.attrelid=c.oid ORDER BY a.attnum"
+
+#define PGSQL_GETCOLUMN_TEMPLATE_SCHEMA "SELECT a.attname FROM pg_attribute a, pg_class c LEFT JOIN pg_namespace n ON c.relnamespace=n.oid WHERE c.relname ='%s' AND n.nspname='%s' AND a.attnum>0 AND a.attrelid=c.oid AND a.attisdropped=FALSE ORDER BY a.attnum"
+
+/* find out which columns the table has */
+static int pgsql_get_columns(const char *table)
+{
+ PGresult *result;
+ char buf[ULOGD_MAX_KEYLEN];
+ char pgbuf[strlen(PGSQL_GETCOLUMN_TEMPLATE_SCHEMA)+strlen(table)+strlen(schema_ce.u.string)+2];
+ char *underscore;
+ struct _field *f;
+ int id;
+ int intaux;
+
+ if (!dbh)
+ return 1;
+
+ if (pgsql_have_schemas) {
+ snprintf(pgbuf, sizeof(pgbuf)-1, PGSQL_GETCOLUMN_TEMPLATE_SCHEMA, table, schema_ce.u.string);
+ } else {
+ snprintf(pgbuf, sizeof(pgbuf)-1, PGSQL_GETCOLUMN_TEMPLATE, table);
+ }
+
+ ulogd_log(ULOGD_DEBUG, "%s\n", pgbuf);
+
+ result = PQexec(dbh, pgbuf);
+ if (!result) {
+ ulogd_log(ULOGD_DEBUG, "\n result false");
+ return 1;
+ }
+
+ if (PQresultStatus(result) != PGRES_TUPLES_OK) {
+ ulogd_log(ULOGD_DEBUG, "\n pres_command_not_ok");
+ return 1;
+ }
+
+ for (intaux=0; intaux<PQntuples(result); intaux++) {
+
+ /* replace all underscores with dots */
+ strncpy(buf, PQgetvalue(result, intaux, 0), ULOGD_MAX_KEYLEN);
+ while ((underscore = strchr(buf, '_')))
+ *underscore = '.';
+
+ DEBUGP("field '%s' found: ", buf);
+
+ if (!(id = keyh_getid(buf))) {
+ DEBUGP(" no keyid!\n");
+ continue;
+ }
+
+ DEBUGP("keyid %u\n", id);
+
+ /* prepend it to the linked list */
+ f = (struct _field *) malloc(sizeof *f);
+ if (!f) {
+ ulogd_log(ULOGD_ERROR, "OOM!\n");
+ return 1;
+ }
+ strncpy(f->name, buf, ULOGD_MAX_KEYLEN);
+ f->id = id;
+ f->next = fields;
+ fields = f;
+ }
+
+ PQclear(result);
+ return 0;
+}
+
+static int exit_nicely(PGconn *conn)
+{
+ PQfinish(conn);
+ return 0;;
+}
+
+/* make connection and select database */
+static int pgsql_open_db(char *server, int port, char *user, char *pass,
+ char *db)
+{
+ int len;
+ char *connstr;
+
+ /* 80 is more than what we need for the fixed parts below */
+ len = 80 + strlen(user) + strlen(db);
+
+ /* hostname and and password are the only optionals */
+ if (server)
+ len += strlen(server);
+ if (pass)
+ len += strlen(pass);
+ if (port)
+ len += 20;
+
+ connstr = (char *) malloc(len);
+ if (!connstr)
+ return 1;
+
+ if (server) {
+ strcpy(connstr, " host=");
+ strcat(connstr, server);
+ }
+
+ if (port) {
+ char portbuf[20];
+ snprintf(portbuf, sizeof(portbuf), " port=%u", port);
+ strcat(connstr, portbuf);
+ }
+
+ strcat(connstr, " dbname=");
+ strcat(connstr, db);
+ strcat(connstr, " user=");
+ strcat(connstr, user);
+
+ if (pass) {
+ strcat(connstr, " password=");
+ strcat(connstr, pass);
+ }
+
+ dbh = PQconnectdb(connstr);
+ if (PQstatus(dbh)!=CONNECTION_OK) {
+ exit_nicely(dbh);
+ return 1;
+ }
+
+ return 0;
+}
+
+static int pgsql_init(void)
+{
+ /* have the opts parsed */
+ config_parse_file("PGSQL", &port_ce);
+
+ if (pgsql_open_db(host_ce.u.string, port_ce.u.value, user_ce.u.string,
+ pass_ce.u.string, db_ce.u.string)) {
+ ulogd_log(ULOGD_ERROR, "can't establish database connection\n");
+ return 1;
+ }
+
+ if (pgsql_namespace()) {
+ return 1;
+ ulogd_log(ULOGD_ERROR, "unable to test for pgsql schemas\n");
+ }
+
+ /* read the fieldnames to know which values to insert */
+ if (pgsql_get_columns(table_ce.u.string)) {
+ ulogd_log(ULOGD_ERROR, "unable to get pgsql columns\n");
+ return 1;
+ }
+ pgsql_createstmt();
+
+ return 0;
+}
+
+static void pgsql_fini(void)
+{
+ PQfinish(dbh);
+}
+
+static ulog_output_t pgsql_plugin = {
+ .name = "pgsql",
+ .output = &pgsql_output,
+ .init = &pgsql_init,
+ .fini = &pgsql_fini,
+};
+
+void _init(void)
+{
+ register_output(&pgsql_plugin);
+}
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