From 05e46e686f2c883b734583f445137300af6dcbcd Mon Sep 17 00:00:00 2001 From: laforge Date: Tue, 2 Oct 2001 16:39:17 +0000 Subject: Added Jakab Laszlo's support for PostgreSQL --- ulogd/pgsql/Makefile.in | 30 ++++ ulogd/pgsql/ulogd_PGSQL.c | 370 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 400 insertions(+) create mode 100644 ulogd/pgsql/Makefile.in create mode 100644 ulogd/pgsql/ulogd_PGSQL.c (limited to 'ulogd/pgsql') diff --git a/ulogd/pgsql/Makefile.in b/ulogd/pgsql/Makefile.in new file mode 100644 index 0000000..2f65173 --- /dev/null +++ b/ulogd/pgsql/Makefile.in @@ -0,0 +1,30 @@ +# + +# Normally You should not need to change anything below +# +include @top_srcdir@/Rules.make + +CFLAGS+=-I@top_srcdir@ -I@top_srcdir@/libipulog/include -I@top_srcdir@/conffile +SH_CFLAGS:=$(CFLAGS) -fPIC + +SHARED_LIBS=ulogd_PGSQL.so + +all: $(SHARED_LIBS) + +distrib: + +$(SHARED_LIBS): %.so: %_sh.o + ld -shared $(PGSQL_LDFLAGS) -o $@ $< + +%_sh.o: %.c + $(CC) $(PGSQL_CFLAGS) $(SH_CFLAGS) -o $@ -c $< + +clean: + rm -f $(SHARED_LIBS) *.o + +distclean: + rm -f Makefile + +install: all + @INSTALL@ -m 755 -d $(DESTDIR)$(ULOGD_LIB_PATH) + @INSTALL@ -m 755 *.so $(DESTDIR)$(ULOGD_LIB_PATH) diff --git a/ulogd/pgsql/ulogd_PGSQL.c b/ulogd/pgsql/ulogd_PGSQL.c new file mode 100644 index 0000000..a54a5ed --- /dev/null +++ b/ulogd/pgsql/ulogd_PGSQL.c @@ -0,0 +1,370 @@ +/* ulogd_PGSQL.c, Version 1.1 + * + * ulogd output plugin for logging to a PGSQL database + * + * (C) 2000 by Harald Welte + * 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 +#include +#include +#include +#include "ulogd.h" +#include "conffile.h" + +#ifdef DEBUG_PQSQL +#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 = { NULL, "pgsqldb", CONFIG_TYPE_STRING, + CONFIG_OPT_MANDATORY, 0, + { } }; + +static config_entry_t host_ce = { &db_ce, "pgsqlhost", CONFIG_TYPE_STRING, + CONFIG_OPT_MANDATORY, 0, + { } }; + +static config_entry_t user_ce = { &host_ce, "pgsqluser", CONFIG_TYPE_STRING, + CONFIG_OPT_MANDATORY, 0, + { } }; + +static config_entry_t pass_ce = { &user_ce, "pgsqlpass", CONFIG_TYPE_STRING, + CONFIG_OPT_MANDATORY, 0, + { } }; + +static config_entry_t table_ce = { &pass_ce, "pgsqltable", CONFIG_TYPE_STRING, + CONFIG_OPT_MANDATORY, 0, + { } }; + +/* is the given string a field in our table? */ +static int is_field(const char *name) +{ + struct _field *f; + + for (f = fields; f; f = f->next) { + if (!strcmp(f->name, name)) + return 1; + } + return 0; +} + +/* our main output function, called by ulogd */ +static int _pgsql_output(ulog_iret_t *result) +{ + struct _field *f; + ulog_iret_t *res; + PGresult *pgres; + + char *tmpstr; + + 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, "%ld,", 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++ = '\''; + tmpstr = inet_ntoa(ntohl(res->value.ui32)); +#ifdef OLD_PGSQL + pgsql_escape_string(stmt_ins, tmpstr, + strlen(tmpstr)); +#else + pgsql_real_escape_string(dbh, stmt_ins, + tmpstr, + strlen(tmpstr)); +#endif /* OLD_PGSQL */ +/* + 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, "%lu,", res->value.ui64); + break; + case ULOGD_RET_BOOL: + sprintf(stmt_ins, "1,"); + break; + case ULOGD_RET_STRING: + *stmt_ins++ = '\''; +/* Change by Jaki +#ifdef OLD_PGSQL + pgsql_escape_string(stmt_ins, res->value.ptr, + strlen(res->value.ptr)); +#else + pgsql_real_escape_string(dbh, stmt_ins, + res->value.ptr, strlen(res->value.ptr)); +#endif +*End Change by Jaki +*/ + strcpy(stmt_ins,"\'"); + strcpy(stmt_ins,res->value.ptr); /* Added by Jaki */ + stmt_ins = stmt + strlen(stmt); + sprintf(stmt_ins, "',"); + /* sprintf(stmt_ins, "'%s',", res->value.ptr); */ + 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; + } + + 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); + + 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; + } + + 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; +} + +/* find out which columns the table has */ +static int _pgsql_get_columns(const char *table) +{ + PGresult *result; + char buf[ULOGD_MAX_KEYLEN]; + char pgbuf[256]; + char *underscore; + struct _field *f; + int id; + int intaux; + char *sql; + + if (!dbh) + return 1; + + strcpy(pgbuf, "SELECT a.attname FROM pg_class c, pg_attribute a WHERE c.relname ='"); + strncat(pgbuf, table, strlen(table)); + strcat(pgbuf, "' AND a.attnum>0 AND a.attrelid=c.oid ORDER BY a.attnum"); + sql = (char *) malloc(strlen(pgbuf)); + sql = pgbuf; + ulogd_log(ULOGD_DEBUG, sql); + result = PQexec(dbh, sql); + 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; intauxname, buf, ULOGD_MAX_KEYLEN); + f->id = id; + f->next = fields; + fields = f; + } + + PQclear(result); + return 0; +} + +int exit_nicely(PGconn *conn) +{ + PQfinish(conn); + return 0;; +} + +/* make connection and select database */ +static int _pgsql_open_db(char *server, char *user, char *pass, char *db) +{ + char connstr[80]; + char * sql; + + strcpy(connstr, " host="); + strcat(connstr, server); + strcat(connstr, " dbname="); + strcat(connstr, db); + strcat(connstr, " user="); + strcat(connstr, user); + strcat(connstr, " password="); + strcat(connstr, pass); + sql = (char *) malloc(strlen(connstr)); + + sql = connstr; + dbh = PQconnectdb(sql); + if (PQstatus(dbh)!=CONNECTION_OK) { + exit_nicely(dbh); + return 1; + } + + + return 0; +} + + +static ulog_output_t _pgsql_plugin = { NULL, "pgsql", &_pgsql_output, NULL }; + +void _init(void) +{ + /* register our configfile options here */ + config_register_key(&table_ce); + + /* have the opts parsed */ + config_parse_file(0); + + if (_pgsql_open_db(host_ce.u.string, user_ce.u.string, + pass_ce.u.string, db_ce.u.string)) { + ulogd_log(ULOGD_ERROR, "can't establish database connection\n"); + return; + } + + /* 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; + } + _pgsql_createstmt(); + register_output(&_pgsql_plugin); + +} -- cgit v1.2.3