uat.h

Go to the documentation of this file.

 
#ifndef __UAT_H__
#define __UAT_H__
 
#include <stdlib.h>
 
#include "ws_symbol_export.h"
#include <wsutil/strtoi.h>
#include <wsutil/dtoa.h>
 
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
 
/*
 * UAT maintains a dynamically allocated table accessible to the user
 * via a file and/or via GUI preference dialogs.
 *
 * The file is read from and written in the personal configuration directory. If
 * there is no such file, defaults will be loaded from the global data
 * directory.
 *
 * The behaviour of the table is controlled by a series of callbacks which
 * the caller (e.g. a dissector) must provide.
 *
 * BEWARE that the user can change an UAT at (almost) any time (via the GUI).
 * That is, pointers to records in an UAT are valid only during the call
 * to the function that obtains them (do not store pointers to these records).
 * The records contents are only guaranteed to be valid in the post_update_cb
 * function. (Implementation detail: currently a race condition is possible
 * where the UAT consumer (dissector code) tries to use the UAT while the GUI
 * user frees a record resulting in use-after-free. This is not ideal and might
 * be fixed later.)
 *
 * UATs are meant for short tables of user data (passwords and such), there is
 * no quick access, you must iterate through them each time to fetch the record
 * you are looking for.
 *
 * Only users via GUI or editing the file can add/remove records, your
 * (dissector) code cannot.
 */
 
/* opaque data type to handle an uat */
typedef struct epan_uat uat_t;
/********************************************
 * Callbacks:
 * these instruct uat on how to deal with user info and data in records
 ********************************************/
 
/********
 * Callbacks dealing with the entire table
 ********/
 
/*
 * Post-Update CB
 *
 * To be called by the GUI code after to the table has being edited.
 * Will be called once the user clicks the Apply or OK button
 * optional
 */
typedef void (*uat_post_update_cb_t)(void);
 
 
/********
 * Callbacks dealing with records (these deal with entire records)
 ********/
 
typedef void* (*uat_copy_cb_t)(void *dest, const void *source, size_t len);
 
typedef void (*uat_free_cb_t)(void *record);
 
typedef void (*uat_reset_cb_t)(void);
 
typedef bool (*uat_update_cb_t)(void *record, char **error);
 
 
/*******
 * Callbacks for single fields (these deal with single values)
 * the caller should provide one of these for every field!
 ********/
 
/*
 * Check CB
 * chk(record, ptr, len, chk_data, fld_data, &error)
 *
 * given an input string (ptr, len) checks if the value is OK for a field in the record.
 * it will return true if OK or else
 * it will return false and set *error to inform the user on what's
 * wrong with the given input
 * The error string must be allocated with g_malloc() or
 * a routine that calls it.
 * optional, if not given any input is considered OK and the set cb will be called
 */
typedef bool (*uat_fld_chk_cb_t)(void *record, const char *ptr, unsigned len, const void *chk_data, const void *fld_data, char **error);
 
/*
 * Set Field CB
 * set(record, ptr, len, set_data, fld_data)
 *
 * given an input string (ptr, len) sets the value of a field in the record,
 * it is mandatory
 */
typedef void (*uat_fld_set_cb_t)(void *record, const char *ptr, unsigned len, const void *set_data, const void *fld_data);
 
/*
 * Convert-to-string CB
 * tostr(record, &out_ptr, &out_len, tostr_data, fld_data)
 *
 * given a record returns a string representation of the field
 * mandatory
 */
typedef void (*uat_fld_tostr_cb_t)(void *record, char **out_ptr, unsigned *out_len, const void *tostr_data, const void *fld_data);
 
/***********
 * Text Mode
 *
 * used for file and dialog representation of fields in columns,
 * when the file is read it modifies the way the value is passed back to the fld_set_cb
 * (see definition bellow for description)
 ***********/
 
typedef enum _uat_text_mode_t {
    PT_TXTMOD_NONE,
    /* not used */
 
    PT_TXTMOD_STRING,
    /*
     file:
         reads:
             ,"\x20\x00\x30", as " \00",3 ("space nil zero" of length 3)
             ,"", as "",0
             ,, as NULL,0
         writes:
             ,"\x20\x30\x00\x20", for " 0\0 ",4
             ,"", for *, 0
             ,, for NULL, *
     dialog:
         accepts \x?? and other escapes
         gets "",0 on empty string
     */
    PT_TXTMOD_HEXBYTES,
    /*
     file:
         reads:
             ,A1b2C3d4, as "\xa1\xb2\xc3\xd4",4
             ,, as NULL,0
         writes:
             ,, on NULL, *
             ,a1b2c3d4, on "\xa1\xb2\xc3\xd4",4
     dialog:
         interprets the following input ... as ...:
         "a1b2c3d4" as "\xa1\xb2\xc3\xd4",4
         "a1 b2:c3d4" as "\xa1\xb2\xc3\xd4",4
         "" as NULL,0
         "invalid" as NULL,3
         "a1b" as NULL, 1
     */
    PT_TXTMOD_ENUM,
    /* Read/Writes/displays the string value (not number!) */
    PT_TXTMOD_DISSECTOR,
    /* Shows a combobox of dissectors */
 
    PT_TXTMOD_COLOR,
    /* Reads/Writes/display color in #RRGGBB format */
 
    PT_TXTMOD_FILENAME,
    /* processed like a PT_TXTMOD_STRING, but shows a filename dialog */
    PT_TXTMOD_DIRECTORYNAME,
    /* processed like a PT_TXTMOD_STRING, but shows a directory dialog */
    PT_TXTMOD_DISPLAY_FILTER,
    /* processed like a PT_TXTMOD_STRING, but verifies display filter */
    PT_TXTMOD_PROTO_FIELD,
    /* processed like a PT_TXTMOD_STRING, but verifies protocol field name (e.g tcp.flags.syn) */
    PT_TXTMOD_BOOL
    /* Displays a checkbox for value */
} uat_text_mode_t;
 
/*
 * Fields
 *
 *
 */
typedef struct _uat_field_t {
    const char* name;
    const char* title;
    uat_text_mode_t mode;
 
    struct {
        uat_fld_chk_cb_t chk;
        uat_fld_set_cb_t set;
        uat_fld_tostr_cb_t tostr;
    } cb;
 
    struct {
        const void* chk;
        const void* set;
        const void* tostr;
    } cbdata;
 
    const void* fld_data;
 
    const char* desc;
    struct _fld_data_t* priv;
} uat_field_t;
 
#define FLDFILL NULL
#define UAT_END_FIELDS {NULL,NULL,PT_TXTMOD_NONE,{0,0,0},{0,0,0},0,0,FLDFILL}
 
/*
 * Flags to indicate what the settings in this UAT affect.
 * This is used when UATs are changed interactively, to indicate what needs
 * to be redone when the UAT is changed.
 *
 * UAT_AFFECTS_FIELDS does *not* trigger a redissection, so usually one
 * will also want UAT_AFFECTS_DISSECTION. A rare exception is changing
 * the defined dfilter macros.
 */
#define UAT_AFFECTS_DISSECTION  0x00000001  /* affects packet dissection */
#define UAT_AFFECTS_FIELDS  0x00000002  /* affects what named fields exist */
 
WS_DLL_PUBLIC
uat_t* uat_new(const char* name,
               size_t size,
               const char* filename,
               bool from_profile,
               void* data_ptr,
               unsigned* num_items_ptr,
               unsigned flags,
               const char* help,
               uat_copy_cb_t copy_cb,
               uat_update_cb_t update_cb,
               uat_free_cb_t free_cb,
               uat_post_update_cb_t post_update_cb,
               uat_reset_cb_t reset_cb,
               uat_field_t* flds_array);
 
WS_DLL_PUBLIC
void uat_destroy(uat_t *uat);
 
void uat_cleanup(void);
 
WS_DLL_PUBLIC
bool uat_load(uat_t* uat_in, const char *filename, const char* app_env_var_prefix, char** err);
 
WS_DLL_PUBLIC
bool uat_load_str(uat_t* uat_in, const char* entry, char** err);
 
uat_t *uat_find(char *name);
 
WS_DLL_PUBLIC
uat_t* uat_get_table_by_name(const char* name);
 
WS_DLL_PUBLIC
void uat_set_default_values(uat_t *uat_in, const char *default_values[]);
 
/*
 * Some common uat_fld_chk_cbs
 */
WS_DLL_PUBLIC
bool uat_fld_chk_str(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_oid(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_proto(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_field(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_dec(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_dec64(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_hex(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_hex64(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_signed_dec(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_signed_dec64(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_num_dbl(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_bool(void*, const char*, unsigned, const void*, const void*, char** err);
WS_DLL_PUBLIC
bool uat_fld_chk_enum(void*, const char*, unsigned, const void*, const void*, char**);
WS_DLL_PUBLIC
bool uat_fld_chk_range(void*, const char*, unsigned, const void*, const void*, char**);
WS_DLL_PUBLIC
bool uat_fld_chk_color(void*, const char*, unsigned, const void*, const void*, char**);
 
typedef void (*uat_cb_t)(void* uat,void* user_data);
WS_DLL_PUBLIC
void uat_foreach_table(uat_cb_t cb,void* user_data);
void uat_unload_all(void);
 
/* Converts an ASCII string using C-style escapes (e.g., for unprintable
 * characters) into a "stringlike" array of bytes that may include internal
 * NUL bytes and other unprintable characters. This is the PT_TEXTMOD_STRING
 * format.
 */
uint8_t* uat_unesc(const char* si, unsigned in_len, unsigned* len_p);
 
/* The same as uat_unesc, but removing the first and last byte. The
 * assumption is that the first and last byte are quote characters. When
 * writing the PT_TEXTMOD_STRING format to file, the escaped string is
 * enclosed in quotes; this function undoes that.
 *
 * TODO - This should probably return a uint8_t* as well, but requires
 * changing types (or casting pointers) in several other files to do so.
 */
char* uat_undquote(const char* si, unsigned in_len, unsigned* len_p);
 
/* Converts a "stringlike" array of bytes into a null-terminated ASCII string
 * using C-style escapes. The inverse of uat_unesc.
 */
char* uat_esc(const uint8_t* buf, unsigned len);
 
/* Converts a ASCII hexstring into an array of bytes. Used to convert
 * the PT_TXTMOD_HEXBYTES format.
 * TODO - This should probably return a uint8_t* as well.
 */
char* uat_unbinstring(const char* si, unsigned in_len, unsigned* len_p);
 
/* Some strings entirely made of ... already declared */
 
WS_DLL_PUBLIC
bool uat_fld_chk_str_isprint(void*, const char*, unsigned, const void*, const void*, char**);
 
WS_DLL_PUBLIC
bool uat_fld_chk_str_isalpha(void*, const char*, unsigned, const void*, const void*, char**);
 
WS_DLL_PUBLIC
bool uat_fld_chk_str_isalnum(void*, const char*, unsigned, const void*, const void*, char**);
 
WS_DLL_PUBLIC
bool uat_fld_chk_str_isdigit(void*, const char*, unsigned, const void*, const void*, char**);
 
WS_DLL_PUBLIC
bool uat_fld_chk_str_isxdigit(void*, const char*, unsigned, const void*, const void*, char**);
 
 
/*
 * Macros
 *   to define basic uat_fld_set_cbs, uat_fld_tostr_cbs
 *   for those elements in uat_field_t array
 */
 
#ifdef __cplusplus
#define UNUSED_PARAMETER(n)
#else
#define UNUSED_PARAMETER(n) n _U_
#endif
 
/*
 * CSTRING macros,
 *    a simple c-string contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_CSTRING_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* new_buf = g_strndup(buf,len); \
    g_free((((rec_t*)rec)->field_name)); \
    (((rec_t*)rec)->field_name) = new_buf; } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    if (((rec_t*)rec)->field_name ) { \
        *out_ptr = g_strdup((((rec_t*)rec)->field_name)); \
        *out_len = (unsigned)strlen((((rec_t*)rec)->field_name)); \
    } else { \
        *out_ptr = g_strdup(""); *out_len = 0; \
    } }
 
#define UAT_FLD_CSTRING(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_str,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
#define UAT_FLD_CSTRING_ISPRINT(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_str_isprint,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
#define UAT_FLD_CSTRING_OTHER(basename,field_name,title,chk,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{ chk ,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * FILENAME and DIRECTORYNAME,
 *    a simple c-string contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_FILENAME_CB_DEF(basename,field_name,rec_t) UAT_CSTRING_CB_DEF(basename,field_name,rec_t)
 
/* XXX UAT_FLD_FILENAME is currently unused. */
#define UAT_FLD_FILENAME(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_FILENAME,{uat_fld_chk_str,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * Both the Qt and GTK+ UIs assume that we're opening a preexisting
 * file. We might want to split the ..._FILENAME defines into
 * ..._FILE_OPEN and ..._FILE_SAVE if we ever need to specify a
 * file that we're creating.
 */
#define UAT_FLD_FILENAME_OTHER(basename,field_name,title,chk,desc) \
    {#field_name, title, PT_TXTMOD_FILENAME,{chk,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
#define UAT_DIRECTORYNAME_CB_DEF(basename,field_name,rec_t) UAT_CSTRING_CB_DEF(basename,field_name,rec_t)
 
#define UAT_FLD_DIRECTORYNAME(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_DIRECTORYNAME,{uat_fld_chk_str,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * DISPLAY_FILTER,
 *    a simple c-string contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_DISPLAY_FILTER_CB_DEF(basename,field_name,rec_t) UAT_CSTRING_CB_DEF(basename,field_name,rec_t)
 
#define UAT_FLD_DISPLAY_FILTER(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_DISPLAY_FILTER, {uat_fld_chk_str,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * PROTO_FIELD,
 *    a simple c-string contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_PROTO_FIELD_CB_DEF(basename,field_name,rec_t) UAT_CSTRING_CB_DEF(basename,field_name,rec_t)
 
#define UAT_FLD_PROTO_FIELD(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_PROTO_FIELD, {uat_fld_chk_field,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * OID - just a CSTRING with a specific check routine
 */
#define UAT_FLD_OID(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_oid,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 
/*
 * LSTRING MACROS - a "string" with an explicit length, so it can contain
 * internal null characters and possibly unprintable characters, that are
 * displayed to the user and written to the file using C-style escapes. An
 * alternative to BUFFER for when the data is often but not necessarily an
 * ASCII printable string, such as in some types of encryption keys.
 */
#define UAT_LSTRING_CB_DEF(basename,field_name,rec_t,ptr_element,len_element) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    uint8_t* new_val = uat_unesc(buf,len,&(((rec_t*)rec)->len_element)); \
    g_free((((rec_t*)rec)->ptr_element)); \
    (((rec_t*)rec)->ptr_element) = new_val; } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    if (((rec_t*)rec)->ptr_element ) { \
        *out_ptr = uat_esc(((rec_t*)rec)->ptr_element, (((rec_t*)rec)->len_element)); \
        *out_len = (unsigned)strlen(*out_ptr); \
    } else { \
        *out_ptr = g_strdup(""); \
        *out_len = 0; \
    } }
 
#define UAT_FLD_LSTRING(basename,field_name,title, desc) \
{#field_name, title, PT_TXTMOD_STRING,{0,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 
/*
 * BUFFER macros,
 *    a buffer_ptr contained in (((rec_t*)rec)->(field_name))
 *    and its len in (((rec_t*)rec)->(len_name))
 */
#define UAT_BUFFER_CB_DEF(basename,field_name,rec_t,ptr_element,len_element) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    unsigned char* new_buf = len ? (unsigned char *)g_memdup2(buf,len) : NULL; \
    g_free((((rec_t*)rec)->ptr_element)); \
    (((rec_t*)rec)->ptr_element) = new_buf; \
    (((rec_t*)rec)->len_element) = len; } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ((rec_t*)rec)->ptr_element ? (char*)g_memdup2(((rec_t*)rec)->ptr_element,((rec_t*)rec)->len_element) : g_strdup(""); \
    *out_len = ((rec_t*)rec)->len_element; }
 
#define UAT_FLD_BUFFER(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_HEXBYTES,{0,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 
/*
 * DEC Macros,
 *   an unsigned decimal number contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_DEC_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ws_strtou32(tmp_str, NULL, &((rec_t*)rec)->field_name); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%u",((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_DEC(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_dec,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 /*
  *   an unsigned 64bit decimal number contained in (((rec_t*)rec)->(field_name))
  */
#define UAT_DEC64_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ws_strtou64(tmp_str, NULL, &((rec_t*)rec)->field_name); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%" PRIu64,((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_DEC64(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_dec64,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 *   a *signed* decimal number contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_SIGNED_DEC_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ws_strtoi32(tmp_str, NULL, &((rec_t*)rec)->field_name); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%d",((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_SIGNED_DEC(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_signed_dec,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 /*
  *   and a *signed* 64bit decimal number contained in (((rec_t*)rec)->(field_name))
  */
#define UAT_SIGNED_DEC64_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ws_strtoi64(tmp_str, NULL, &((rec_t*)rec)->field_name); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%" PRId64,((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_SIGNED_DEC64(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_signed_dec64,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
#define UAT_FLD_NONE(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_NONE,{uat_fld_chk_num_dec,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 
/*
 * HEX Macros,
 *   an unsigned hexadecimal number contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_HEX_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ws_hexstrtou32(tmp_str, NULL, &((rec_t*)rec)->field_name); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%x",((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_HEX(basename,field_name,title,desc) \
{#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_hex,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 /*
  * HEX Macros for 64bit,
  *   an unsigned long long hexadecimal number contained in (((rec_t*)rec)->(field_name))
  */
#define UAT_HEX64_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ws_hexstrtou64(tmp_str, NULL, &((rec_t*)rec)->field_name); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%" PRIx64,((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_HEX64(basename,field_name,title,desc) \
{#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_hex64,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * DBL Macros,
 *   a double precision floating-point number contained in (((rec_t*)rec)->(field_name))
 *
 *   [using g_ascii_dtostr() would be fine for tostr_cb for storing data, but
 *   produces more ugly looking values when presenting to the user. dtoa_g_fmt
 *   produces the shortest string which also is a unique round-trip for any
 *   particular value.]
 */
#define UAT_DBL_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    ((rec_t*)rec)->field_name = g_ascii_strtod(tmp_str, NULL); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char buf[32]; \
    *out_ptr = ws_strdup(dtoa_g_fmt(buf, ((rec_t*)rec)->field_name)); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_DBL(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_num_dbl,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * BOOL Macros,
 *   an boolean value contained in (((rec_t*)rec)->(field_name))
 *
 * Write "TRUE" or "FALSE" for backwards compatibility with pre-4.4
 * versions that expect that capitalization.
 */
#define UAT_BOOL_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    char* tmp_str = g_strndup(buf,len); \
    if (tmp_str && g_ascii_strcasecmp(tmp_str, "true") == 0) \
        ((rec_t*)rec)->field_name = 1; \
    else \
        ((rec_t*)rec)->field_name = 0; \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("%s",((rec_t*)rec)->field_name ? "TRUE" : "FALSE"); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_BOOL(basename,field_name,title,desc) \
{#field_name, title, PT_TXTMOD_BOOL,{uat_fld_chk_bool,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * ENUM macros
 *  enum_t: name = ((enum_t*)ptr)->strptr
 *          value = ((enum_t*)ptr)->value
 *  rec_t:
 *        value
 */
#define UAT_VS_DEF(basename,field_name,rec_t,default_t,default_val,default_str) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* vs, const void* UNUSED_PARAMETER(u2)) {\
    unsigned i; \
    char* str = g_strndup(buf,len); \
    const char* cstr; \
    ((rec_t*)rec)->field_name = default_val; \
    for(i=0; ( cstr = ((const value_string*)vs)[i].strptr ) ;i++) { \
        if (g_str_equal(cstr,str)) { \
            ((rec_t*)rec)->field_name = (default_t)((const value_string*)vs)[i].value; \
            g_free(str); \
            return; \
        } \
    } \
    g_free(str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* vs, const void* UNUSED_PARAMETER(u2)) {\
    unsigned i; \
    for(i=0;((const value_string*)vs)[i].strptr;i++) { \
        if ( ((const value_string*)vs)[i].value == ((rec_t*)rec)->field_name ) { \
            *out_ptr = g_strdup(((const value_string*)vs)[i].strptr); \
            *out_len = (unsigned)strlen(*out_ptr); \
            return; \
        } \
    } \
    *out_ptr = g_strdup(default_str); \
    *out_len = (unsigned)strlen(default_str); }
 
#define UAT_VS_CSTRING_DEF(basename,field_name,rec_t,default_val,default_str) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* vs, const void* UNUSED_PARAMETER(u2)) {\
    unsigned i; \
    char* str = g_strndup(buf,len); \
    const char* cstr; \
    ((rec_t*)rec)->field_name = default_val; \
    for(i=0; ( cstr = ((const value_string*)vs)[i].strptr ) ;i++) { \
        if (g_str_equal(cstr,str)) { \
          ((rec_t*)rec)->field_name = g_strdup(((const value_string*)vs)[i].strptr); \
          g_free(str); \
          return; \
        } \
    } \
    g_free(str);} \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(vs), const void* UNUSED_PARAMETER(u2)) {\
    if (((rec_t*)rec)->field_name ) { \
        *out_ptr = g_strdup((((rec_t*)rec)->field_name)); \
        *out_len = (unsigned)strlen((((rec_t*)rec)->field_name)); \
    } else { \
        *out_ptr = g_strdup(""); *out_len = 0; } }
 
#define UAT_FLD_VS(basename,field_name,title,enum,desc) \
    {#field_name, title, PT_TXTMOD_ENUM,{uat_fld_chk_enum,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{&(enum),&(enum),&(enum)},&(enum),desc,FLDFILL}
 
 
/*
 * Color Macros,
 *   an #RRGGBB color value contained in (((rec_t*)rec)->(field_name))
 */
#define UAT_COLOR_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    if (len < 1) { \
        ((rec_t*)rec)->field_name = 0; \
        return; \
    } \
    char* tmp_str = g_strndup(buf+1,len-1); \
    ((rec_t*)rec)->field_name = (unsigned)strtol(tmp_str,NULL,16); \
    g_free(tmp_str); } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    *out_ptr = ws_strdup_printf("#%06X",((rec_t*)rec)->field_name); \
    *out_len = (unsigned)strlen(*out_ptr); }
 
#define UAT_FLD_COLOR(basename,field_name,title,desc) \
{#field_name, title, PT_TXTMOD_COLOR,{uat_fld_chk_color,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
 
/*
 * DISSECTOR macros
 */
 
#define UAT_DISSECTOR_DEF(basename, field_name, dissector_field, name_field, rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    if (len) { \
        ((rec_t*)rec)->name_field = g_strndup(buf, len); \
        g_strstrip(((rec_t*)rec)->name_field); \
        ((rec_t*)rec)->dissector_field = find_dissector(((rec_t*)rec)->name_field); \
    } else { \
        ((rec_t*)rec)->dissector_field = find_dissector("data"); \
        ((rec_t*)rec)->name_field = NULL; \
    } } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    if ( ((rec_t*)rec)->name_field ) { \
        *out_ptr = g_strdup((((rec_t*)rec)->name_field)); \
        *out_len = (unsigned)strlen(*out_ptr); \
    } else { \
        *out_ptr = g_strdup(""); *out_len = 0; \
    } }
 
 
#define UAT_FLD_DISSECTOR(basename,field_name,title,desc) \
    {#field_name, title, PT_TXTMOD_DISSECTOR,{uat_fld_chk_proto,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
#define UAT_FLD_DISSECTOR_OTHER(basename,field_name,title,chk,desc) \
    {#field_name, title, PT_TXTMOD_DISSECTOR,{chk,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},{0,0,0},0,desc,FLDFILL}
 
/*
 * RANGE macros
 */
 
#define UAT_RANGE_CB_DEF(basename,field_name,rec_t) \
static void basename ## _ ## field_name ## _set_cb(void* rec, const char* buf, unsigned len, const void* UNUSED_PARAMETER(u1), const void* u2) {\
    char* rng = g_strndup(buf,len);\
        range_convert_str(NULL, &(((rec_t*)rec)->field_name), rng,GPOINTER_TO_UINT(u2)); \
        g_free(rng); \
    } \
static void basename ## _ ## field_name ## _tostr_cb(void* rec, char** out_ptr, unsigned* out_len, const void* UNUSED_PARAMETER(u1), const void* UNUSED_PARAMETER(u2)) {\
    if ( ((rec_t*)rec)->field_name ) { \
        *out_ptr = range_convert_range(NULL, ((rec_t*)rec)->field_name); \
        *out_len = (unsigned)strlen(*out_ptr); \
    } else { \
        *out_ptr = g_strdup(""); *out_len = 0; \
    } }
 
 
#define UAT_FLD_RANGE(basename,field_name,title,max,desc) \
    {#field_name, title, PT_TXTMOD_STRING,{uat_fld_chk_range,basename ## _ ## field_name ## _set_cb,basename ## _ ## field_name ## _tostr_cb},\
      {0,0,0},GUINT_TO_POINTER(max),desc,FLDFILL}
 
#ifdef __cplusplus
}
#endif /* __cplusplus */
 
#endif /* __UAT_H__ */
 
/*
 * Editor modelines
 *
 * Local Variables:
 * c-basic-offset: 4
 * tab-width: 8
 * indent-tabs-mode: nil
 * End:
 *
 * ex: set shiftwidth=4 tabstop=8 expandtab:
 * :indentSize=4:tabSize=8:noTabs=true:
 */