1 files changed, 247 insertions, 0 deletions

diff --git a/src/mod_log_sql_pgsql.c b/src/mod_log_sql_pgsql.c
new file mode 100644
index 0000000..dcfbd73
--- /dev/null
+++ b/src/mod_log_sql_pgsql.c
@@ -0,0 +1,247 @@
+/* $Id:mod_log_sql_pgsql.c 180 2008-09-21 15:54:12Z urkle@drip.ws $ */
+
+#if defined(WITH_APACHE20)
+#       include "apache20.h"
+#elif defined(WITH_APACHE13)
+#       include "apache13.h"
+#else
+#       error Unsupported Apache version
+#endif
+
+
+#ifdef HAVE_CONFIG_H
+/* Undefine these to prevent conflicts between Apache ap_config_auto.h and 
+ * my config.h. Only really needed for Apache < 2.0.48, but it can't hurt.
+ */
+#undef PACKAGE_BUGREPORT
+#undef PACKAGE_NAME
+#undef PACKAGE_STRING
+#undef PACKAGE_TARNAME
+#undef PACKAGE_VERSION
+
+#include "autoconfig.h"
+#endif
+
+#include "mod_log_sql.h"
+
+#include "libpq-fe.h"
+
+/* Connect to the PGSQL database */
+static logsql_opendb_ret log_sql_pgsql_connect(server_rec *s, logsql_dbconnection *db)
+{
+        const char *host = apr_table_get(db->parms,"hostname");
+        const char *user = apr_table_get(db->parms,"username");
+        const char *passwd = apr_table_get(db->parms,"password");
+        const char *database = apr_table_get(db->parms,"database");
+        const char *s_tcpport = apr_table_get(db->parms,"port");
+        
+        db->handle = PQsetdbLogin(host, s_tcpport, NULL, NULL, database, user, passwd);
+
+        if (PQstatus(db->handle) == CONNECTION_OK) {
+                log_error(APLOG_MARK,APLOG_DEBUG,0, s,"HOST: '%s' PORT: '%s' DB: '%s' USER: '%s'",
+                                host, s_tcpport, database, user);
+                return LOGSQL_OPENDB_SUCCESS;
+        } else {
+                log_error(APLOG_MARK,APLOG_DEBUG,0, s,"mod_log_sql: database connection error: %s",
+                                PQerrorMessage(db->handle));
+                log_error(APLOG_MARK,APLOG_DEBUG, 0, s,"HOST: '%s' PORT: '%s' DB: '%s' USER: '%s'",
+                                host, s_tcpport, database, user);
+                return LOGSQL_OPENDB_FAIL;
+        }
+}
+
+/* Close the DB link */
+static void log_sql_pgsql_close(logsql_dbconnection *db)
+{
+        PQfinish((PGconn*)(db->handle));
+}
+
+/* Routine to escape the 'dangerous' characters that would otherwise
+ * corrupt the INSERT string: ', \, and "
+ * Also PQescapeString does not place the ' around the string. So we have
+ * to do this manually
+ */
+static const char *log_sql_pgsql_escape(const char *from_str, apr_pool_t *p, 
+                                                                logsql_dbconnection *db)
+{
+        char *temp;
+        if (!from_str)
+                return NULL;
+        else {
+                char *to_str;
+                unsigned long length = strlen(from_str);
+                unsigned long retval;
+
+                /* Pre-allocate a new string that could hold twice the original, which would only
+                 * happen if the whole original string was 'dangerous' characters. 
+                 * And forsee the space for the 2 '
+                 */
+                temp = to_str = (char *) apr_palloc(p, length * 2 + 3);
+                if (!to_str) {
+                        return from_str;
+                }
+
+                *temp = '\'';
+                temp++;
+                
+                retval = PQescapeString(temp, from_str, length);
+                
+                /* avoid the string to be tolong for the sql database*/
+                if (retval > 250) retval = 250;
+                
+                *(temp+retval) = '\'';
+                *(temp+retval+1) = '\0';
+                
+                /* We must always return the to_str, because we always need the ' added */
+//              if (retval)
+                  return to_str;
+//              else
+//                return from_str;
+        }
+}
+
+/* Run a sql insert query and return a categorized error or success */
+static logsql_query_ret log_sql_pgsql_query(request_rec *r,logsql_dbconnection *db,
+                                                                const char *query)
+{
+        PGresult *result;
+        void (*handler) (int);
+        unsigned int real_error = 0;
+        /*const char *real_error_str = NULL;*/
+
+        PGconn *conn = db->handle;
+
+        if (PQstatus(conn) != CONNECTION_OK) {
+                return LOGSQL_QUERY_NOLINK;
+        }
+        /* A failed mysql_query() may send a SIGPIPE, so we ignore that signal momentarily. */
+        /* Does postgresql do this also ??? */
+        handler = signal(SIGPIPE, SIG_IGN);
+        
+        result = PQexec(conn, query);
+        /* Run the query */
+        if (PQresultStatus(result) == PGRES_COMMAND_OK) {
+                signal(SIGPIPE, handler);
+                PQclear(result);
+                return LOGSQL_QUERY_SUCCESS;
+        }
+        /* Check to see if the error is "nonexistent table" */
+        /*      removed ... don't know how ! (sorry)
+        real_error = mysql_errno(dblink);
+
+        if (real_error == ER_NO_SUCH_TABLE) {
+                log_error(APLOG_MARK,APLOG_ERR,0, r->server,"table does not exist, preserving query");
+                signal(SIGPIPE, handler);
+                PQclear(result);
+                return LOGSQL_QUERY_NOTABLE;
+        }*/
+        
+        /* Restore SIGPIPE to its original handler function */
+        signal(SIGPIPE, handler);
+        PQclear(result);
+        return LOGSQL_QUERY_FAIL;
+}
+
+/* Create table table_name of type table_type. */
+static logsql_table_ret log_sql_pgsql_create(request_rec *r, logsql_dbconnection *db,
+                                                logsql_tabletype table_type, const char *table_name)
+{
+        PGresult *result;
+        const char *tabletype = apr_table_get(db->parms,"tabletype");
+        void (*handler) (int);
+        char *type_suffix = NULL;
+
+        char *create_prefix = "create table if not exists `";
+        char *create_suffix = NULL;
+        char *create_sql;
+
+        PGconn *conn = db->handle;
+
+/*      if (!global_config.createtables) {
+                return APR_SUCCESS;
+        }*/
+
+        switch (table_type) {
+        case LOGSQL_TABLE_ACCESS:
+                create_suffix = 
+        "` (id char(19),\
+       agent varchar(255),\
+       bytes_sent int unsigned,\
+       child_pid smallint unsigned,\
+       cookie varchar(255),\
+           machine_id varchar(25),\
+       request_file varchar(255),\
+       referer varchar(255),\
+       remote_host varchar(50),\
+       remote_logname varchar(50),\
+       remote_user varchar(50),\
+       request_duration smallint unsigned,\
+       request_line varchar(255),\
+       request_method varchar(10),\
+       request_protocol varchar(10),\
+       request_time char(28),\
+       request_uri varchar(255),\
+           request_args varchar(255),\
+       server_port smallint unsigned,\
+       ssl_cipher varchar(25),\
+       ssl_keysize smallint unsigned,\
+       ssl_maxkeysize smallint unsigned,\
+       status smallint unsigned,\
+       time_stamp int unsigned,\
+       virtual_host varchar(255))";
+                break;
+        case LOGSQL_TABLE_COOKIES:
+        case LOGSQL_TABLE_HEADERSIN:
+        case LOGSQL_TABLE_HEADERSOUT:
+        case LOGSQL_TABLE_NOTES:
+                create_suffix = 
+        "` (id char(19),\
+           item varchar(80),\
+           val varchar(80))";
+                break;
+        }
+        
+        if (tabletype) {
+                type_suffix = apr_pstrcat(r->pool, " TYPE=", 
+                                                        tabletype, NULL);
+        }
+        /* Find memory long enough to hold the whole CREATE string + \0 */
+        create_sql = apr_pstrcat(r->pool, create_prefix, table_name, create_suffix,
+                                                type_suffix, NULL);
+
+        log_error(APLOG_MARK,APLOG_DEBUG,0, r->server,"create string: %s", create_sql);
+
+        if (PQstatus(conn) != CONNECTION_OK) {
+                return LOGSQL_QUERY_NOLINK;
+        }
+        /* A failed mysql_query() may send a SIGPIPE, so we ignore that signal momentarily. */
+        handler = signal(SIGPIPE, SIG_IGN);
+
+        /* Run the create query */
+        result = PQexec(conn, create_sql);
+        if (PQresultStatus(result) != PGRES_COMMAND_OK) {
+                log_error(APLOG_MARK,APLOG_ERR,0, r->server,"failed to create table: %s",
+                        table_name);
+                signal(SIGPIPE, handler);
+                PQclear(result);
+                return LOGSQL_TABLE_FAIL;
+        }
+        signal(SIGPIPE, handler);
+        PQclear(result);
+        return LOGSQL_TABLE_SUCCESS;
+}
+
+static char *supported_drivers[] = {"pgsql",NULL};
+static logsql_dbdriver pgsql_driver = {
+        supported_drivers,
+        log_sql_pgsql_connect,  /* open DB connection */
+        log_sql_pgsql_close,    /* close DB connection */
+        log_sql_pgsql_escape,   /* escape query */
+        log_sql_pgsql_query,    /* insert query */
+        log_sql_pgsql_create    /* create table */
+};
+
+LOGSQL_REGISTER(pgsql) {
+        log_sql_register_driver(p,&pgsql_driver);
+        LOGSQL_REGISTER_RETURN;
+}