Formatted qlafilter
Qlafilter formatted according to the style guide.
This commit is contained in:
Markus Makela
parent
a7c0952e66
commit
036fd6f16c
@ -31,13 +31,14 @@
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* file to which the queries are logged. A serial number is appended to this
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* name in order that each session logs to a different file.
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*
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* Date Who Description
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* 03/06/2014 Mark Riddoch Initial implementation
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* 11/06/2014 Mark Riddoch Addition of source and match parameters
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* 19/06/2014 Mark Riddoch Addition of user parameter
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* Date Who Description
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* 03/06/2014 Mark Riddoch Initial implementation
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* 11/06/2014 Mark Riddoch Addition of source and match parameters
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* 19/06/2014 Mark Riddoch Addition of user parameter
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*
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* @endverbatim
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*/
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#include <stdio.h>
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#include <fcntl.h>
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#include <errno.h>
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@ -52,11 +53,12 @@
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#include <string.h>
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#include <atomic.h>
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MODULE_INFO info = {
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MODULE_API_FILTER,
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MODULE_GA,
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FILTER_VERSION,
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"A simple query logging filter"
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MODULE_INFO info =
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{
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MODULE_API_FILTER,
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MODULE_GA,
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FILTER_VERSION,
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"A simple query logging filter"
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};
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static char *version_str = "V1.1.1";
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@ -64,24 +66,25 @@ static char *version_str = "V1.1.1";
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/*
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* The filter entry points
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*/
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static FILTER *createInstance(char **options, FILTER_PARAMETER **);
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static void *newSession(FILTER *instance, SESSION *session);
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static void closeSession(FILTER *instance, void *session);
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static void freeSession(FILTER *instance, void *session);
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static void setDownstream(FILTER *instance, void *fsession, DOWNSTREAM *downstream);
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static int routeQuery(FILTER *instance, void *fsession, GWBUF *queue);
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static void diagnostic(FILTER *instance, void *fsession, DCB *dcb);
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static FILTER *createInstance(char **options, FILTER_PARAMETER **);
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static void *newSession(FILTER *instance, SESSION *session);
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static void closeSession(FILTER *instance, void *session);
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static void freeSession(FILTER *instance, void *session);
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static void setDownstream(FILTER *instance, void *fsession, DOWNSTREAM *downstream);
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static int routeQuery(FILTER *instance, void *fsession, GWBUF *queue);
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static void diagnostic(FILTER *instance, void *fsession, DCB *dcb);
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static FILTER_OBJECT MyObject = {
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static FILTER_OBJECT MyObject =
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{
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createInstance,
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newSession,
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closeSession,
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freeSession,
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setDownstream,
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NULL, // No Upstream requirement
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NULL, // No Upstream requirement
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routeQuery,
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NULL, // No client reply
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NULL, // No client reply
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diagnostic,
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};
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@ -93,30 +96,32 @@ static FILTER_OBJECT MyObject = {
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* To this base a session number is attached such that each session will
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* have a unique name.
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*/
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typedef struct {
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int sessions; /* The count of sessions */
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char *filebase; /* The filename base */
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char *source; /* The source of the client connection */
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char *userName; /* The user name to filter on */
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char *match; /* Optional text to match against */
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regex_t re; /* Compiled regex text */
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char *nomatch; /* Optional text to match against for exclusion */
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regex_t nore; /* Compiled regex nomatch text */
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typedef struct
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{
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int sessions; /* The count of sessions */
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char *filebase; /* The filename base */
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char *source; /* The source of the client connection */
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char *userName; /* The user name to filter on */
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char *match; /* Optional text to match against */
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regex_t re; /* Compiled regex text */
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char *nomatch; /* Optional text to match against for exclusion */
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regex_t nore; /* Compiled regex nomatch text */
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} QLA_INSTANCE;
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/**
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* The session structure for this QLA filter.
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* This stores the downstream filter information, such that the
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* This stores the downstream filter information, such that the
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* filter is able to pass the query on to the next filter (or router)
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* in the chain.
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*
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* It also holds the file descriptor to which queries are written.
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*/
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typedef struct {
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DOWNSTREAM down;
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char *filename;
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FILE *fp;
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int active;
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typedef struct
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{
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DOWNSTREAM down;
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char *filename;
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FILE *fp;
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int active;
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} QLA_SESSION;
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/**
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@ -127,7 +132,7 @@ typedef struct {
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char *
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version()
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{
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return version_str;
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return version_str;
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}
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/**
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@ -150,100 +155,112 @@ ModuleInit()
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FILTER_OBJECT *
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GetModuleObject()
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{
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return &MyObject;
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return &MyObject;
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}
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/**
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* Create an instance of the filter for a particular service
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* within MaxScale.
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*
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* @param options The options for this filter
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* @param params The array of name/value pair parameters for the filter
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*
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* @param options The options for this filter
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* @param params The array of name/value pair parameters for the filter
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*
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* @return The instance data for this new instance
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*/
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static FILTER *
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static FILTER *
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createInstance(char **options, FILTER_PARAMETER **params)
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{
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QLA_INSTANCE *my_instance;
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int i;
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QLA_INSTANCE *my_instance;
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int i;
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if ((my_instance = calloc(1, sizeof(QLA_INSTANCE))) != NULL)
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{
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if (options){
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my_instance->filebase = strdup(options[0]);
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}else{
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my_instance->filebase = strdup("qla");
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}
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my_instance->source = NULL;
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my_instance->userName = NULL;
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my_instance->match = NULL;
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my_instance->nomatch = NULL;
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if (params)
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{
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for (i = 0; params[i]; i++)
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{
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if (!strcmp(params[i]->name, "match"))
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{
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my_instance->match = strdup(params[i]->value);
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}
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else if (!strcmp(params[i]->name, "exclude"))
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{
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my_instance->nomatch = strdup(params[i]->value);
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}
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else if (!strcmp(params[i]->name, "source"))
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my_instance->source = strdup(params[i]->value);
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else if (!strcmp(params[i]->name, "user"))
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my_instance->userName = strdup(params[i]->value);
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else if (!strcmp(params[i]->name, "filebase"))
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{
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if (my_instance->filebase){
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free(my_instance->filebase);
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my_instance->filebase = NULL;
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}
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my_instance->filebase = strdup(params[i]->value);
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}
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else if (!filter_standard_parameter(params[i]->name))
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{
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MXS_ERROR("qlafilter: Unexpected parameter '%s'.",
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params[i]->name);
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}
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}
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}
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my_instance->sessions = 0;
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if (my_instance->match &&
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regcomp(&my_instance->re, my_instance->match, REG_ICASE))
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{
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MXS_ERROR("qlafilter: Invalid regular expression '%s'"
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" for the match parameter.\n",
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my_instance->match);
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free(my_instance->match);
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free(my_instance->source);
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if(my_instance->filebase){
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if ((my_instance = calloc(1, sizeof(QLA_INSTANCE))) != NULL)
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{
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if (options)
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{
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my_instance->filebase = strdup(options[0]);
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}
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else
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{
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my_instance->filebase = strdup("qla");
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}
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my_instance->source = NULL;
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my_instance->userName = NULL;
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my_instance->match = NULL;
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my_instance->nomatch = NULL;
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if (params)
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{
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for (i = 0; params[i]; i++)
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{
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if (!strcmp(params[i]->name, "match"))
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{
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my_instance->match = strdup(params[i]->value);
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}
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else if (!strcmp(params[i]->name, "exclude"))
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{
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my_instance->nomatch = strdup(params[i]->value);
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}
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else if (!strcmp(params[i]->name, "source"))
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{
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my_instance->source = strdup(params[i]->value);
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}
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else if (!strcmp(params[i]->name, "user"))
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{
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my_instance->userName = strdup(params[i]->value);
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}
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else if (!strcmp(params[i]->name, "filebase"))
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{
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if (my_instance->filebase)
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{
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free(my_instance->filebase);
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my_instance->filebase = NULL;
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}
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free(my_instance);
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return NULL;
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}
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if (my_instance->nomatch &&
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regcomp(&my_instance->nore, my_instance->nomatch,
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REG_ICASE))
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{
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my_instance->filebase = strdup(params[i]->value);
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}
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else if (!filter_standard_parameter(params[i]->name))
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{
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MXS_ERROR("qlafilter: Unexpected parameter '%s'.",
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params[i]->name);
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}
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}
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}
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my_instance->sessions = 0;
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if (my_instance->match &&
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regcomp(&my_instance->re, my_instance->match, REG_ICASE))
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{
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MXS_ERROR("qlafilter: Invalid regular expression '%s'"
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" for the match parameter.\n",
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my_instance->match);
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free(my_instance->match);
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free(my_instance->source);
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if (my_instance->filebase)
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{
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free(my_instance->filebase);
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}
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free(my_instance);
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return NULL;
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}
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if (my_instance->nomatch &&
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regcomp(&my_instance->nore, my_instance->nomatch,
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REG_ICASE))
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{
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MXS_ERROR("qlafilter: Invalid regular expression '%s'"
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" for the nomatch paramter.",
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my_instance->match);
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if (my_instance->match)
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regfree(&my_instance->re);
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free(my_instance->match);
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free(my_instance->source);
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if(my_instance->filebase){
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free(my_instance->filebase);
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}
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free(my_instance);
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return NULL;
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}
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}
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return (FILTER *)my_instance;
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if (my_instance->match)
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{
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regfree(&my_instance->re);
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}
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free(my_instance->match);
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free(my_instance->source);
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if (my_instance->filebase)
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{
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free(my_instance->filebase);
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}
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free(my_instance);
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return NULL;
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}
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}
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return(FILTER *) my_instance;
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}
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/**
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@ -251,80 +268,82 @@ int i;
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*
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* Create the file to log to and open it.
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*
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* @param instance The filter instance data
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* @param session The session itself
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* @param instance The filter instance data
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* @param session The session itself
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* @return Session specific data for this session
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*/
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static void *
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static void *
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newSession(FILTER *instance, SESSION *session)
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{
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QLA_INSTANCE *my_instance = (QLA_INSTANCE *)instance;
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QLA_SESSION *my_session;
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char *remote, *userName;
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QLA_INSTANCE *my_instance = (QLA_INSTANCE *) instance;
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QLA_SESSION *my_session;
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char *remote, *userName;
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if ((my_session = calloc(1, sizeof(QLA_SESSION))) != NULL)
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{
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if ((my_session->filename =
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(char *)malloc(strlen(my_instance->filebase) + 20))
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== NULL)
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Memory allocation for qla filter "
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"file name failed due to %d, %s.",
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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free(my_session);
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return NULL;
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}
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my_session->active = 1;
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if (my_instance->source
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&& (remote = session_get_remote(session)) != NULL)
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{
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if (strcmp(remote, my_instance->source))
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my_session->active = 0;
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}
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userName = session_getUser(session);
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if (my_instance->userName &&
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userName &&
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strcmp(userName,my_instance->userName))
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{
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my_session->active = 0;
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}
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sprintf(my_session->filename, "%s.%d",
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my_instance->filebase,
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my_instance->sessions);
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if ((my_session = calloc(1, sizeof(QLA_SESSION))) != NULL)
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{
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if ((my_session->filename =
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(char *) malloc(strlen(my_instance->filebase) + 20))
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== NULL)
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Memory allocation for qla filter "
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"file name failed due to %d, %s.",
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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free(my_session);
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return NULL;
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}
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my_session->active = 1;
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if (my_instance->source
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&& (remote = session_get_remote(session)) != NULL)
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{
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if (strcmp(remote, my_instance->source))
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{
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my_session->active = 0;
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}
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}
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userName = session_getUser(session);
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if (my_instance->userName &&
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userName &&
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strcmp(userName, my_instance->userName))
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{
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my_session->active = 0;
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}
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sprintf(my_session->filename, "%s.%d",
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my_instance->filebase,
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my_instance->sessions);
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// Multiple sessions can try to update my_instance->sessions simultaneously
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atomic_add(&(my_instance->sessions), 1);
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if (my_session->active)
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{
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my_session->fp = fopen(my_session->filename, "w");
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if (my_session->fp == NULL)
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Opening output file for qla "
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"fileter failed due to %d, %s",
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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free(my_session->filename);
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free(my_session);
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my_session = NULL;
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}
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}
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}
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else
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{
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atomic_add(&(my_instance->sessions), 1);
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if (my_session->active)
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{
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my_session->fp = fopen(my_session->filename, "w");
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if (my_session->fp == NULL)
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Memory allocation for qla filter failed due to "
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"%d, %s.",
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MXS_ERROR("Opening output file for qla "
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"fileter failed due to %d, %s",
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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}
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return my_session;
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free(my_session->filename);
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free(my_session);
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my_session = NULL;
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}
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}
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}
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else
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{
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char errbuf[STRERROR_BUFLEN];
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MXS_ERROR("Memory allocation for qla filter failed due to "
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"%d, %s.",
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errno,
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strerror_r(errno, errbuf, sizeof(errbuf)));
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}
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return my_session;
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}
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/**
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@ -332,48 +351,50 @@ char *remote, *userName;
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* by which a filter may cleanup data structure etc.
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* In the case of the QLA filter we simple close the file descriptor.
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*
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* @param instance The filter instance data
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* @param session The session being closed
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* @param instance The filter instance data
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* @param session The session being closed
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*/
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static void
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static void
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closeSession(FILTER *instance, void *session)
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{
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QLA_SESSION *my_session = (QLA_SESSION *)session;
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QLA_SESSION *my_session = (QLA_SESSION *) session;
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if (my_session->active && my_session->fp)
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fclose(my_session->fp);
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if (my_session->active && my_session->fp)
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{
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fclose(my_session->fp);
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}
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}
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/**
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* Free the memory associated with the session
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*
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* @param instance The filter instance
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* @param session The filter session
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* @param instance The filter instance
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* @param session The filter session
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*/
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static void
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freeSession(FILTER *instance, void *session)
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{
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QLA_SESSION *my_session = (QLA_SESSION *)session;
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QLA_SESSION *my_session = (QLA_SESSION *) session;
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free(my_session->filename);
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free(session);
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return;
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free(my_session->filename);
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free(session);
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return;
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the downstream filter or router to which queries will be
|
||||
* passed from this filter.
|
||||
*
|
||||
* @param instance The filter instance data
|
||||
* @param session The filter session
|
||||
* @param downstream The downstream filter or router.
|
||||
* @param instance The filter instance data
|
||||
* @param session The filter session
|
||||
* @param downstream The downstream filter or router.
|
||||
*/
|
||||
static void
|
||||
setDownstream(FILTER *instance, void *session, DOWNSTREAM *downstream)
|
||||
{
|
||||
QLA_SESSION *my_session = (QLA_SESSION *)session;
|
||||
QLA_SESSION *my_session = (QLA_SESSION *) session;
|
||||
|
||||
my_session->down = *downstream;
|
||||
my_session->down = *downstream;
|
||||
}
|
||||
|
||||
/**
|
||||
@ -382,48 +403,48 @@ QLA_SESSION *my_session = (QLA_SESSION *)session;
|
||||
* query should normally be passed to the downstream component
|
||||
* (filter or router) in the filter chain.
|
||||
*
|
||||
* @param instance The filter instance data
|
||||
* @param session The filter session
|
||||
* @param queue The query data
|
||||
* @param instance The filter instance data
|
||||
* @param session The filter session
|
||||
* @param queue The query data
|
||||
*/
|
||||
static int
|
||||
static int
|
||||
routeQuery(FILTER *instance, void *session, GWBUF *queue)
|
||||
{
|
||||
QLA_INSTANCE *my_instance = (QLA_INSTANCE *)instance;
|
||||
QLA_SESSION *my_session = (QLA_SESSION *)session;
|
||||
char *ptr;
|
||||
int length = 0;
|
||||
struct tm t;
|
||||
struct timeval tv;
|
||||
QLA_INSTANCE *my_instance = (QLA_INSTANCE *) instance;
|
||||
QLA_SESSION *my_session = (QLA_SESSION *) session;
|
||||
char *ptr;
|
||||
int length = 0;
|
||||
struct tm t;
|
||||
struct timeval tv;
|
||||
|
||||
if (my_session->active)
|
||||
{
|
||||
if (queue->next != NULL)
|
||||
{
|
||||
queue = gwbuf_make_contiguous(queue);
|
||||
}
|
||||
if ((ptr = modutil_get_SQL(queue)) != NULL)
|
||||
{
|
||||
if ((my_instance->match == NULL ||
|
||||
regexec(&my_instance->re, ptr, 0, NULL, 0) == 0) &&
|
||||
(my_instance->nomatch == NULL ||
|
||||
regexec(&my_instance->nore,ptr,0,NULL, 0) != 0))
|
||||
{
|
||||
gettimeofday(&tv, NULL);
|
||||
localtime_r(&tv.tv_sec, &t);
|
||||
fprintf(my_session->fp,
|
||||
"%02d:%02d:%02d.%-3d %d/%02d/%d, ",
|
||||
t.tm_hour, t.tm_min, t.tm_sec, (int)(tv.tv_usec / 1000),
|
||||
t.tm_mday, t.tm_mon + 1, 1900 + t.tm_year);
|
||||
fprintf(my_session->fp,"%s\n",ptr);
|
||||
|
||||
}
|
||||
free(ptr);
|
||||
}
|
||||
}
|
||||
/* Pass the query downstream */
|
||||
return my_session->down.routeQuery(my_session->down.instance,
|
||||
my_session->down.session, queue);
|
||||
if (my_session->active)
|
||||
{
|
||||
if (queue->next != NULL)
|
||||
{
|
||||
queue = gwbuf_make_contiguous(queue);
|
||||
}
|
||||
if ((ptr = modutil_get_SQL(queue)) != NULL)
|
||||
{
|
||||
if ((my_instance->match == NULL ||
|
||||
regexec(&my_instance->re, ptr, 0, NULL, 0) == 0) &&
|
||||
(my_instance->nomatch == NULL ||
|
||||
regexec(&my_instance->nore, ptr, 0, NULL, 0) != 0))
|
||||
{
|
||||
gettimeofday(&tv, NULL);
|
||||
localtime_r(&tv.tv_sec, &t);
|
||||
fprintf(my_session->fp,
|
||||
"%02d:%02d:%02d.%-3d %d/%02d/%d, ",
|
||||
t.tm_hour, t.tm_min, t.tm_sec, (int) (tv.tv_usec / 1000),
|
||||
t.tm_mday, t.tm_mon + 1, 1900 + t.tm_year);
|
||||
fprintf(my_session->fp, "%s\n", ptr);
|
||||
|
||||
}
|
||||
free(ptr);
|
||||
}
|
||||
}
|
||||
/* Pass the query downstream */
|
||||
return my_session->down.routeQuery(my_session->down.instance,
|
||||
my_session->down.session, queue);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -433,31 +454,39 @@ struct timeval tv;
|
||||
* instance as a whole, otherwise print diagnostics for the
|
||||
* particular session.
|
||||
*
|
||||
* @param instance The filter instance
|
||||
* @param fsession Filter session, may be NULL
|
||||
* @param dcb The DCB for diagnostic output
|
||||
* @param instance The filter instance
|
||||
* @param fsession Filter session, may be NULL
|
||||
* @param dcb The DCB for diagnostic output
|
||||
*/
|
||||
static void
|
||||
static void
|
||||
diagnostic(FILTER *instance, void *fsession, DCB *dcb)
|
||||
{
|
||||
QLA_INSTANCE *my_instance = (QLA_INSTANCE *)instance;
|
||||
QLA_SESSION *my_session = (QLA_SESSION *)fsession;
|
||||
QLA_INSTANCE *my_instance = (QLA_INSTANCE *) instance;
|
||||
QLA_SESSION *my_session = (QLA_SESSION *) fsession;
|
||||
|
||||
if (my_session)
|
||||
{
|
||||
dcb_printf(dcb, "\t\tLogging to file %s.\n",
|
||||
my_session->filename);
|
||||
}
|
||||
if (my_instance->source)
|
||||
dcb_printf(dcb, "\t\tLimit logging to connections from %s\n",
|
||||
my_instance->source);
|
||||
if (my_instance->userName)
|
||||
dcb_printf(dcb, "\t\tLimit logging to user %s\n",
|
||||
my_instance->userName);
|
||||
if (my_instance->match)
|
||||
dcb_printf(dcb, "\t\tInclude queries that match %s\n",
|
||||
my_instance->match);
|
||||
if (my_instance->nomatch)
|
||||
dcb_printf(dcb, "\t\tExclude queries that match %s\n",
|
||||
my_instance->nomatch);
|
||||
if (my_session)
|
||||
{
|
||||
dcb_printf(dcb, "\t\tLogging to file %s.\n",
|
||||
my_session->filename);
|
||||
}
|
||||
if (my_instance->source)
|
||||
{
|
||||
dcb_printf(dcb, "\t\tLimit logging to connections from %s\n",
|
||||
my_instance->source);
|
||||
}
|
||||
if (my_instance->userName)
|
||||
{
|
||||
dcb_printf(dcb, "\t\tLimit logging to user %s\n",
|
||||
my_instance->userName);
|
||||
}
|
||||
if (my_instance->match)
|
||||
{
|
||||
dcb_printf(dcb, "\t\tInclude queries that match %s\n",
|
||||
my_instance->match);
|
||||
}
|
||||
if (my_instance->nomatch)
|
||||
{
|
||||
dcb_printf(dcb, "\t\tExclude queries that match %s\n",
|
||||
my_instance->nomatch);
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user