app_adsiprog.c

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/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 1999 - 2005, Digium, Inc.
 *
 * Mark Spencer <markster@digium.com>
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */
 
/*! \file
 *
 * \brief Program Asterisk ADSI Scripts into phone
 *
 * \author Mark Spencer <markster@digium.com>
 *
 * \ingroup applications
 */
 
/*! \li \ref app_adsiprog.c uses the configuration file \ref adsi.conf
 * \addtogroup configuration_file Configuration Files
 */
 
/*!
 * \page adsi.conf adsi.conf
 * \verbinclude adsi.conf.sample
 */
 
/*** MODULEINFO
    <depend>res_adsi</depend>
    <support_level>deprecated</support_level>
 ***/
 
#include "asterisk.h"
 
#include <netinet/in.h>
#include <ctype.h>
 
#include "asterisk/paths.h" /* use ast_config_AST_CONFIG_DIR */
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/adsi.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
 
static const char app[] = "ADSIProg";
 
/*** DOCUMENTATION
    <application name="ADSIProg" language="en_US">
        <since>
            <version>0.1.12</version>
        </since>
        <synopsis>
            Load Asterisk ADSI Scripts into phone
        </synopsis>
        <syntax>
            <parameter name="script" required="false">
                <para>adsi script to use. If not given uses the default script <filename>asterisk.adsi</filename></para>
            </parameter>
        </syntax>
        <description>
            <para>This application programs an ADSI Phone with the given script</para>
        </description>
        <see-also>
            <ref type="application">GetCPEID</ref>
            <ref type="filename">adsi.conf</ref>
        </see-also>
    </application>
 ***/
 
/* #define DUMP_MESSAGES */
 
struct adsi_event {
    int id;
    const char *name;
};
 
static const struct adsi_event events[] = {
    { 1, "CALLERID" },
    { 2, "VMWI" },
    { 3, "NEARANSWER" },
    { 4, "FARANSWER" },
    { 5, "ENDOFRING" },
    { 6, "IDLE" },
    { 7, "OFFHOOK" },
    { 8, "CIDCW" },
    { 9, "BUSY" },
    { 10, "FARRING" },
    { 11, "DIALTONE" },
    { 12, "RECALL" },
    { 13, "MESSAGE" },
    { 14, "REORDER" },
    { 15, "DISTINCTIVERING" },
    { 16, "RING" },
    { 17, "REMINDERRING" },
    { 18, "SPECIALRING" },
    { 19, "CODEDRING" },
    { 20, "TIMER" },
    { 21, "INUSE" },
    { 22, "EVENT22" },
    { 23, "EVENT23" },
    { 24, "CPEID" },
};
 
static const struct adsi_event justify[] = {
    { 0, "CENTER" },
    { 1, "RIGHT" },
    { 2, "LEFT" },
    { 3, "INDENT" },
};
 
#define STATE_NORMAL 0
#define STATE_INKEY  1
#define STATE_INSUB  2
#define STATE_INIF   3
 
#define MAX_RET_CODE 20
#define MAX_SUB_LEN  255
#define MAX_MAIN_LEN 1600
 
#define ARG_STRING (1 << 0)
#define ARG_NUMBER (1 << 1)
 
struct adsi_soft_key {
    char vname[40];  /* Which "variable" is associated with it */
    int retstrlen;   /* Length of return string */
    int initlen;     /* initial length */
    int id;
    int defined;
    char retstr[80]; /* Return string data */
};
 
struct adsi_subscript {
    char vname[40];
    int id;
    int defined;
    int datalen;
    int inscount;
    int ifinscount;
    char *ifdata;
    char data[2048];
};
 
struct adsi_state {
    char vname[40];
    int id;
};
 
struct adsi_flag {
    char vname[40];
    int id;
};
 
struct adsi_display {
    char vname[40];
    int id;
    char data[70];
    int datalen;
};
 
struct adsi_script {
    int state;
    int numkeys;
    int numsubs;
    int numstates;
    int numdisplays;
    int numflags;
    struct adsi_soft_key *key;
    struct adsi_subscript *sub;
    /* Pre-defined displays */
    struct adsi_display displays[63];
    /* ADSI States 1 (initial) - 254 */
    struct adsi_state states[256];
    /* Keys 2-63 */
    struct adsi_soft_key keys[62];
    /* Subscripts 0 (main) to 127 */
    struct adsi_subscript subs[128];
    /* Flags 1-7 */
    struct adsi_flag flags[7];
 
    /* Stuff from adsi script */
    unsigned char sec[5];
    char desc[19];
    unsigned char fdn[5];
    int ver;
};
 
 
static int process_token(void *out, char *src, int maxlen, int argtype)
{
    if ((strlen(src) > 1) && src[0] == '\"') {
        /* This is a quoted string */
        if (!(argtype & ARG_STRING))
            return -1;
        src++;
        /* Don't take more than what's there */
        if (maxlen > strlen(src) - 1)
            maxlen = strlen(src) - 1;
        memcpy(out, src, maxlen);
        ((char *)out)[maxlen] = '\0';
    } else if (!ast_strlen_zero(src) && (src[0] == '\\')) {
        if (!(argtype & ARG_NUMBER))
            return -1;
        /* Octal value */
        if (sscanf(src, "%30o", (unsigned *)out) != 1)
            return -1;
        if (argtype & ARG_STRING) {
            /* Convert */
            *((unsigned int *)out) = htonl(*((unsigned int *)out));
        }
    } else if ((strlen(src) > 2) && (src[0] == '0') && (tolower(src[1]) == 'x')) {
        if (!(argtype & ARG_NUMBER))
            return -1;
        /* Hex value */
        if (sscanf(src + 2, "%30x", (unsigned int *)out) != 1)
            return -1;
        if (argtype & ARG_STRING) {
            /* Convert */
            *((unsigned int *)out) = htonl(*((unsigned int *)out));
        }
    } else if ((!ast_strlen_zero(src) && isdigit(src[0]))) {
        if (!(argtype & ARG_NUMBER))
            return -1;
        /* Hex value */
        if (sscanf(src, "%30d", (int *)out) != 1)
            return -1;
        if (argtype & ARG_STRING) {
            /* Convert */
            *((unsigned int *)out) = htonl(*((unsigned int *)out));
        }
    } else
        return -1;
    return 0;
}
 
static char *get_token(char **buf, const char *script, int lineno)
{
    char *tmp = *buf, *keyword;
    int quoted = 0;
 
    /* Advance past any white space */
    while(*tmp && (*tmp < 33))
        tmp++;
    if (!*tmp)
        return NULL;
    keyword = tmp;
    while(*tmp && ((*tmp > 32)  || quoted)) {
        if (*tmp == '\"') {
            quoted = !quoted;
        }
        tmp++;
    }
    if (quoted) {
        ast_log(LOG_WARNING, "Mismatched quotes at line %d of %s\n", lineno, script);
        return NULL;
    }
    *tmp = '\0';
    tmp++;
    while(*tmp && (*tmp < 33))
        tmp++;
    /* Note where we left off */
    *buf = tmp;
    return keyword;
}
 
static char *validdtmf = "123456789*0#ABCD";
 
static int send_dtmf(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char dtmfstr[80], *a;
    int bytes = 0;
 
    if (!(a = get_token(&args, script, lineno))) {
        ast_log(LOG_WARNING, "Expecting something to send for SENDDTMF at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(dtmfstr, a, sizeof(dtmfstr) - 1, ARG_STRING)) {
        ast_log(LOG_WARNING, "Invalid token for SENDDTMF at line %d of %s\n", lineno, script);
        return 0;
    }
 
    a = dtmfstr;
 
    while (*a) {
        if (strchr(validdtmf, *a)) {
            *buf = *a;
            buf++;
            bytes++;
        } else
            ast_log(LOG_WARNING, "'%c' is not a valid DTMF tone at line %d of %s\n", *a, lineno, script);
        a++;
    }
 
    return bytes;
}
 
static int goto_line(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *page = get_token(&args, script, lineno);
    char *gline = get_token(&args, script, lineno);
    int line;
    unsigned char cmd;
 
    if (!page || !gline) {
        ast_log(LOG_WARNING, "Expecting page and line number for GOTOLINE at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (!strcasecmp(page, "INFO"))
        cmd = 0;
    else if (!strcasecmp(page, "COMM"))
        cmd = 0x80;
    else {
        ast_log(LOG_WARNING, "Expecting either 'INFO' or 'COMM' page, got '%s' at line %d of %s\n", page, lineno, script);
        return 0;
    }
 
    if (process_token(&line, gline, sizeof(line), ARG_NUMBER)) {
        ast_log(LOG_WARNING, "Invalid line number '%s' at line %d of %s\n", gline, lineno, script);
        return 0;
    }
 
    cmd |= line;
    buf[0] = 0x8b;
    buf[1] = cmd;
 
    return 2;
}
 
static int goto_line_rel(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *dir = get_token(&args, script, lineno);
    char *gline = get_token(&args, script, lineno);
    int line;
    unsigned char cmd;
 
    if (!dir || !gline) {
        ast_log(LOG_WARNING, "Expecting direction and number of lines for GOTOLINEREL at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (!strcasecmp(dir, "UP"))
        cmd = 0;
    else if (!strcasecmp(dir, "DOWN"))
        cmd = 0x20;
    else {
        ast_log(LOG_WARNING, "Expecting either 'UP' or 'DOWN' direction, got '%s' at line %d of %s\n", dir, lineno, script);
        return 0;
    }
 
    if (process_token(&line, gline, sizeof(line), ARG_NUMBER)) {
        ast_log(LOG_WARNING, "Invalid line number '%s' at line %d of %s\n", gline, lineno, script);
        return 0;
    }
 
    cmd |= line;
    buf[0] = 0x8c;
    buf[1] = cmd;
 
    return 2;
}
 
static int send_delay(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *gtime = get_token(&args, script, lineno);
    int ms;
 
    if (!gtime) {
        ast_log(LOG_WARNING, "Expecting number of milliseconds to wait at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(&ms, gtime, sizeof(ms), ARG_NUMBER)) {
        ast_log(LOG_WARNING, "Invalid delay milliseconds '%s' at line %d of %s\n", gtime, lineno, script);
        return 0;
    }
 
    buf[0] = 0x90;
 
    if (id == 11)
        buf[1] = ms / 100;
    else
        buf[1] = ms / 10;
 
    return 2;
}
 
static int set_state(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *gstate = get_token(&args, script, lineno);
    int state;
 
    if (!gstate) {
        ast_log(LOG_WARNING, "Expecting state number at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(&state, gstate, sizeof(state), ARG_NUMBER)) {
        ast_log(LOG_WARNING, "Invalid state number '%s' at line %d of %s\n", gstate, lineno, script);
        return 0;
    }
 
    buf[0] = id;
    buf[1] = state;
 
    return 2;
}
 
static int cleartimer(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
 
    if (tok)
        ast_log(LOG_WARNING, "Clearing timer requires no arguments ('%s') at line %d of %s\n", tok, lineno, script);
 
    buf[0] = id;
 
    /* For some reason the clear code is different slightly */
    if (id == 7)
        buf[1] = 0x10;
    else
        buf[1] = 0x00;
 
    return 2;
}
 
static struct adsi_flag *getflagbyname(struct adsi_script *state, char *name, const char *script, int lineno, int create)
{
    int x;
 
    for (x = 0; x < state->numflags; x++) {
        if (!strcasecmp(state->flags[x].vname, name))
            return &state->flags[x];
    }
 
    /* Return now if we're not allowed to create */
    if (!create)
        return NULL;
 
    if (state->numflags > 6) {
        ast_log(LOG_WARNING, "No more flag space at line %d of %s\n", lineno, script);
        return NULL;
    }
 
    ast_copy_string(state->flags[state->numflags].vname, name, sizeof(state->flags[state->numflags].vname));
    state->flags[state->numflags].id = state->numflags + 1;
    state->numflags++;
 
    return &state->flags[state->numflags-1];
}
 
static int setflag(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
    char sname[80];
    struct adsi_flag *flag;
 
    if (!tok) {
        ast_log(LOG_WARNING, "Setting flag requires a flag number at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(sname, tok, sizeof(sname) - 1, ARG_STRING)) {
        ast_log(LOG_WARNING, "Invalid flag '%s' at line %d of %s\n", tok, lineno, script);
        return 0;
    }
 
    if (!(flag = getflagbyname(state, sname, script, lineno, 0))) {
        ast_log(LOG_WARNING, "Flag '%s' is undeclared at line %d of %s\n", sname, lineno, script);
        return 0;
    }
 
    buf[0] = id;
    buf[1] = ((flag->id & 0x7) << 4) | 1;
 
    return 2;
}
 
static int clearflag(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
    struct adsi_flag *flag;
    char sname[80];
 
    if (!tok) {
        ast_log(LOG_WARNING, "Clearing flag requires a flag number at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(sname, tok, sizeof(sname) - 1, ARG_STRING)) {
        ast_log(LOG_WARNING, "Invalid flag '%s' at line %d of %s\n", tok, lineno, script);
        return 0;
    }
 
    if (!(flag = getflagbyname(state, sname, script, lineno, 0))) {
        ast_log(LOG_WARNING, "Flag '%s' is undeclared at line %d of %s\n", sname, lineno, script);
        return 0;
    }
 
    buf[0] = id;
    buf[1] = ((flag->id & 0x7) << 4);
 
    return 2;
}
 
static int starttimer(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
    int secs;
 
    if (!tok) {
        ast_log(LOG_WARNING, "Missing number of seconds at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(&secs, tok, sizeof(secs), ARG_NUMBER)) {
        ast_log(LOG_WARNING, "Invalid number of seconds '%s' at line %d of %s\n", tok, lineno, script);
        return 0;
    }
 
    buf[0] = id;
    buf[1] = 0x1;
    buf[2] = secs;
 
    return 3;
}
 
static int geteventbyname(char *name)
{
    int x;
 
    for (x = 0; x < ARRAY_LEN(events); x++) {
        if (!strcasecmp(events[x].name, name))
            return events[x].id;
    }
 
    return 0;
}
 
static int getjustifybyname(char *name)
{
    int x;
 
    for (x = 0; x < ARRAY_LEN(justify); x++) {
        if (!strcasecmp(justify[x].name, name))
            return justify[x].id;
    }
 
    return -1;
}
 
static struct adsi_soft_key *getkeybyname(struct adsi_script *state, char *name, const char *script, int lineno)
{
    int x;
 
    for (x = 0; x < state->numkeys; x++) {
        if (!strcasecmp(state->keys[x].vname, name))
            return &state->keys[x];
    }
 
    if (state->numkeys > 61) {
        ast_log(LOG_WARNING, "No more key space at line %d of %s\n", lineno, script);
        return NULL;
    }
 
    ast_copy_string(state->keys[state->numkeys].vname, name, sizeof(state->keys[state->numkeys].vname));
    state->keys[state->numkeys].id = state->numkeys + 2;
    state->numkeys++;
 
    return &state->keys[state->numkeys-1];
}
 
static struct adsi_subscript *getsubbyname(struct adsi_script *state, char *name, const char *script, int lineno)
{
    int x;
 
    for (x = 0; x < state->numsubs; x++) {
        if (!strcasecmp(state->subs[x].vname, name))
            return &state->subs[x];
    }
 
    if (state->numsubs > 127) {
        ast_log(LOG_WARNING, "No more subscript space at line %d of %s\n", lineno, S_OR(script, "unknown"));
        return NULL;
    }
 
    ast_copy_string(state->subs[state->numsubs].vname, name, sizeof(state->subs[state->numsubs].vname));
    state->subs[state->numsubs].id = state->numsubs;
    state->numsubs++;
 
    return &state->subs[state->numsubs-1];
}
 
static struct adsi_state *getstatebyname(struct adsi_script *state, char *name, const char *script, int lineno, int create)
{
    int x;
 
    for (x = 0; x <state->numstates; x++) {
        if (!strcasecmp(state->states[x].vname, name))
            return &state->states[x];
    }
 
    /* Return now if we're not allowed to create */
    if (!create)
        return NULL;
 
    if (state->numstates > 253) {
        ast_log(LOG_WARNING, "No more state space at line %d of %s\n", lineno, script);
        return NULL;
    }
 
    ast_copy_string(state->states[state->numstates].vname, name, sizeof(state->states[state->numstates].vname));
    state->states[state->numstates].id = state->numstates + 1;
    state->numstates++;
 
    return &state->states[state->numstates-1];
}
 
static struct adsi_display *getdisplaybyname(struct adsi_script *state, char *name, const char *script, int lineno, int create)
{
    int x;
 
    for (x = 0; x < state->numdisplays; x++) {
        if (!strcasecmp(state->displays[x].vname, name))
            return &state->displays[x];
    }
 
    /* Return now if we're not allowed to create */
    if (!create)
        return NULL;
 
    if (state->numdisplays > 61) {
        ast_log(LOG_WARNING, "No more display space at line %d of %s\n", lineno, script);
        return NULL;
    }
 
    ast_copy_string(state->displays[state->numdisplays].vname, name, sizeof(state->displays[state->numdisplays].vname));
    state->displays[state->numdisplays].id = state->numdisplays + 1;
    state->numdisplays++;
 
    return &state->displays[state->numdisplays-1];
}
 
static int showkeys(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *tok, newkey[80];
    int bytes, x, flagid = 0;
    unsigned char keyid[6];
    struct adsi_soft_key *key;
    struct adsi_flag *flag;
 
    for (x = 0; x < 7; x++) {
        /* Up to 6 key arguments */
        if (!(tok = get_token(&args, script, lineno)))
            break;
        if (!strcasecmp(tok, "UNLESS")) {
            /* Check for trailing UNLESS flag */
            if (!(tok = get_token(&args, script, lineno)))
                ast_log(LOG_WARNING, "Missing argument for UNLESS clause at line %d of %s\n", lineno, script);
            else if (process_token(newkey, tok, sizeof(newkey) - 1, ARG_STRING))
                ast_log(LOG_WARNING, "Invalid flag name '%s' at line %d of %s\n", tok, lineno, script);
            else if (!(flag = getflagbyname(state, newkey, script, lineno, 0)))
                ast_log(LOG_WARNING, "Flag '%s' is undeclared at line %d of %s\n", newkey, lineno, script);
            else
                flagid = flag->id;
            if ((tok = get_token(&args, script, lineno)))
                ast_log(LOG_WARNING, "Extra arguments after UNLESS clause: '%s' at line %d of %s\n", tok, lineno, script);
            break;
        }
        if (x > 5) {
            ast_log(LOG_WARNING, "Only 6 keys can be defined, ignoring '%s' at line %d of %s\n", tok, lineno, script);
            break;
        }
        if (process_token(newkey, tok, sizeof(newkey) - 1, ARG_STRING)) {
            ast_log(LOG_WARNING, "Invalid token for key name: %s\n", tok);
            continue;
        }
 
        if (!(key = getkeybyname(state, newkey, script, lineno)))
            break;
        keyid[x] = key->id;
    }
    buf[0] = id;
    buf[1] = (flagid & 0x7) << 3 | (x & 0x7);
    for (bytes = 0; bytes < x; bytes++)
        buf[bytes + 2] = keyid[bytes];
 
    return 2 + x;
}
 
static int showdisplay(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *tok, dispname[80];
    int line = 0, flag = 0, cmd = 3;
    struct adsi_display *disp;
 
    /* Get display */
    if (!(tok = get_token(&args, script, lineno)) || process_token(dispname, tok, sizeof(dispname) - 1, ARG_STRING)) {
        ast_log(LOG_WARNING, "Invalid display name: %s at line %d of %s\n", tok ? tok : "<nothing>", lineno, script);
        return 0;
    }
 
    if (!(disp = getdisplaybyname(state, dispname, script, lineno, 0))) {
        ast_log(LOG_WARNING, "Display '%s' is undefined at line %d of %s\n", dispname, lineno, script);
        return 0;
    }
 
    if (!(tok = get_token(&args, script, lineno)) || strcasecmp(tok, "AT")) {
        ast_log(LOG_WARNING, "Missing token 'AT' at line %d of %s\n", lineno, script);
        return 0;
    }
 
    /* Get line number */
    if (!(tok = get_token(&args, script, lineno)) || process_token(&line, tok, sizeof(line), ARG_NUMBER)) {
        ast_log(LOG_WARNING, "Invalid line: '%s' at line %d of %s\n", tok ? tok : "<nothing>", lineno, script);
        return 0;
    }
 
    if ((tok = get_token(&args, script, lineno)) && !strcasecmp(tok, "NOUPDATE")) {
        cmd = 1;
        tok = get_token(&args, script, lineno);
    }
 
    if (tok && !strcasecmp(tok, "UNLESS")) {
        /* Check for trailing UNLESS flag */
        if (!(tok = get_token(&args, script, lineno)))
            ast_log(LOG_WARNING, "Missing argument for UNLESS clause at line %d of %s\n", lineno, script);
        else if (process_token(&flag, tok, sizeof(flag), ARG_NUMBER))
            ast_log(LOG_WARNING, "Invalid flag number '%s' at line %d of %s\n", tok, lineno, script);
 
        if ((tok = get_token(&args, script, lineno)))
            ast_log(LOG_WARNING, "Extra arguments after UNLESS clause: '%s' at line %d of %s\n", tok, lineno, script);
    }
 
    buf[0] = id;
    buf[1] = (cmd << 6) | (disp->id & 0x3f);
    buf[2] = ((line & 0x1f) << 3) | (flag & 0x7);
 
    return 3;
}
 
static int cleardisplay(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
 
    if (tok)
        ast_log(LOG_WARNING, "Clearing display requires no arguments ('%s') at line %d of %s\n", tok, lineno, script);
 
    buf[0] = id;
    buf[1] = 0x00;
    return 2;
}
 
static int digitdirect(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
 
    if (tok)
        ast_log(LOG_WARNING, "Digitdirect requires no arguments ('%s') at line %d of %s\n", tok, lineno, script);
 
    buf[0] = id;
    buf[1] = 0x7;
    return 2;
}
 
static int clearcbone(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
 
    if (tok)
        ast_log(LOG_WARNING, "CLEARCB1 requires no arguments ('%s') at line %d of %s\n", tok, lineno, script);
 
    buf[0] = id;
    buf[1] = 0;
    return 2;
}
 
static int digitcollect(char *buf, char *name, int id, char *args, struct adsi_script *istate, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
 
    if (tok)
        ast_log(LOG_WARNING, "Digitcollect requires no arguments ('%s') at line %d of %s\n", tok, lineno, script);
 
    buf[0] = id;
    buf[1] = 0xf;
    return 2;
}
 
static int subscript(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
    char subscr[80];
    struct adsi_subscript *sub;
 
    if (!tok) {
        ast_log(LOG_WARNING, "Missing subscript to call at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if (process_token(subscr, tok, sizeof(subscr) - 1, ARG_STRING)) {
        ast_log(LOG_WARNING, "Invalid number of seconds '%s' at line %d of %s\n", tok, lineno, script);
        return 0;
    }
 
    if (!(sub = getsubbyname(state, subscr, script, lineno)))
        return 0;
 
    buf[0] = 0x9d;
    buf[1] = sub->id;
 
    return 2;
}
 
static int onevent(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno)
{
    char *tok = get_token(&args, script, lineno);
    char subscr[80], sname[80];
    int sawin = 0, event, snums[8], scnt = 0, x;
    struct adsi_subscript *sub;
 
    if (!tok) {
        ast_log(LOG_WARNING, "Missing event for 'ONEVENT' at line %d of %s\n", lineno, script);
        return 0;
    }
 
    if ((event = geteventbyname(tok)) < 1) {
        ast_log(LOG_WARNING, "'%s' is not a valid event name, at line %d of %s\n", args, lineno, script);
        return 0;
    }
 
    tok = get_token(&args, script, lineno);
    while ((!sawin && !strcasecmp(tok, "IN")) || (sawin && !strcasecmp(tok, "OR"))) {
        sawin = 1;
        if (scnt > 7) {
            ast_log(LOG_WARNING, "No more than 8 states may be specified for inclusion at line %d of %s\n", lineno, script);
            return 0;
        }
        /* Process 'in' things */
        if (!(tok = get_token(&args, script, lineno))) {
            ast_log(LOG_WARNING, "Missing state name at line %d of %s\n", lineno, script);
            return 0;
        }
        if (process_token(sname, tok, sizeof(sname), ARG_STRING)) {
            ast_log(LOG_WARNING, "'%s' is not a valid state name at line %d of %s\n", tok, lineno, script);
            return 0;
        }
        if ((snums[scnt] = getstatebyname(state, sname, script, lineno, 0) == NULL)) {
            ast_log(LOG_WARNING, "State '%s' not declared at line %d of %s\n", sname, lineno, script);
            return 0;
        }
        scnt++;
        if (!(tok = get_token(&args, script, lineno)))
            break;
    }
    if (!tok || strcasecmp(tok, "GOTO")) {
        if (!tok)
            tok = "<nothing>";
        if (sawin)
            ast_log(LOG_WARNING, "Got '%s' while looking for 'GOTO' or 'OR' at line %d of %s\n", tok, lineno, script);
        else
            ast_log(LOG_WARNING, "Got '%s' while looking for 'GOTO' or 'IN' at line %d of %s\n", tok, lineno, script);
    }
    if (!(tok = get_token(&args, script, lineno))) {
        ast_log(LOG_WARNING, "Missing subscript to call at line %d of %s\n", lineno, script);
        return 0;
    }
    if (process_token(subscr, tok, sizeof(subscr) - 1, ARG_STRING)) {
        ast_log(LOG_WARNING, "Invalid subscript '%s' at line %d of %s\n", tok, lineno, script);
        return 0;
    }
    if (!(sub = getsubbyname(state, subscr, script, lineno)))
        return 0;
    buf[0] = 8;
    buf[1] = event;
    buf[2] = sub->id | 0x80;
    for (x = 0; x < scnt; x++)
        buf[3 + x] = snums[x];
    return 3 + scnt;
}
 
struct adsi_key_cmd {
    char *name;
    int id;
    int (*add_args)(char *buf, char *name, int id, char *args, struct adsi_script *state, const char *script, int lineno);
};
 
static const struct adsi_key_cmd kcmds[] = {
    { "SENDDTMF", 0, send_dtmf },
    /* Encoded DTMF would go here */
    { "ONHOOK", 0x81 },
    { "OFFHOOK", 0x82 },
    { "FLASH", 0x83 },
    { "WAITDIALTONE", 0x84 },
    /* Send line number */
    { "BLANK", 0x86 },
    { "SENDCHARS", 0x87 },
    { "CLEARCHARS", 0x88 },
    { "BACKSPACE", 0x89 },
    /* Tab column */
    { "GOTOLINE", 0x8b, goto_line },
    { "GOTOLINEREL", 0x8c, goto_line_rel },
    { "PAGEUP", 0x8d },
    { "PAGEDOWN", 0x8e },
    /* Extended DTMF */
    { "DELAY", 0x90, send_delay },
    { "DIALPULSEONE", 0x91 },
    { "DATAMODE", 0x92 },
    { "VOICEMODE", 0x93 },
    /* Display call buffer 'n' */
    /* Clear call buffer 'n' */
    { "CLEARCB1", 0x95, clearcbone },
    { "DIGITCOLLECT", 0x96, digitcollect },
    { "DIGITDIRECT", 0x96, digitdirect },
    { "CLEAR", 0x97 },
    { "SHOWDISPLAY", 0x98, showdisplay },
    { "CLEARDISPLAY", 0x98, cleardisplay },
    { "SHOWKEYS", 0x99, showkeys },
    { "SETSTATE", 0x9a, set_state },
    { "TIMERSTART", 0x9b, starttimer },
    { "TIMERCLEAR", 0x9b, cleartimer },
    { "SETFLAG", 0x9c, setflag },
    { "CLEARFLAG", 0x9c, clearflag },
    { "GOTO", 0x9d, subscript },
    { "EVENT22", 0x9e },
    { "EVENT23", 0x9f },
    { "EXIT", 0xa0 },
};
 
static const struct adsi_key_cmd opcmds[] = {
 
    /* 1 - Branch on event -- handled specially */
    { "SHOWKEYS", 2, showkeys },
    /* Display Control */
    { "SHOWDISPLAY", 3, showdisplay },
    { "CLEARDISPLAY", 3, cleardisplay },
    { "CLEAR", 5 },
    { "SETSTATE", 6, set_state },
    { "TIMERSTART", 7, starttimer },
    { "TIMERCLEAR", 7, cleartimer },
    { "ONEVENT", 8, onevent },
    /* 9 - Subroutine label, treated specially */
    { "SETFLAG", 10, setflag },
    { "CLEARFLAG", 10, clearflag },
    { "DELAY", 11, send_delay },
    { "EXIT", 12 },
};
 
 
static int process_returncode(struct adsi_soft_key *key, char *code, char *args, struct adsi_script *state, const char *script, int lineno)
{
    int x, res;
    char *unused;
 
    for (x = 0; x < ARRAY_LEN(kcmds); x++) {
        if ((kcmds[x].id > -1) && !strcasecmp(kcmds[x].name, code)) {
            if (kcmds[x].add_args) {
                res = kcmds[x].add_args(key->retstr + key->retstrlen,
                        code, kcmds[x].id, args, state, script, lineno);
                if ((key->retstrlen + res - key->initlen) <= MAX_RET_CODE)
                    key->retstrlen += res;
                else
                    ast_log(LOG_WARNING, "No space for '%s' code in key '%s' at line %d of %s\n", kcmds[x].name, key->vname, lineno, script);
            } else {
                if ((unused = get_token(&args, script, lineno)))
                    ast_log(LOG_WARNING, "'%s' takes no arguments at line %d of %s (token is '%s')\n", kcmds[x].name, lineno, script, unused);
                if ((key->retstrlen + 1 - key->initlen) <= MAX_RET_CODE) {
                    key->retstr[key->retstrlen] = kcmds[x].id;
                    key->retstrlen++;
                } else
                    ast_log(LOG_WARNING, "No space for '%s' code in key '%s' at line %d of %s\n", kcmds[x].name, key->vname, lineno, script);
            }
            return 0;
        }
    }
    return -1;
}
 
static int process_opcode(struct adsi_subscript *sub, char *code, char *args, struct adsi_script *state, const char *script, int lineno)
{
    int x, res, max = sub->id ? MAX_SUB_LEN : MAX_MAIN_LEN;
    char *unused;
 
    for (x = 0; x < ARRAY_LEN(opcmds); x++) {
        if ((opcmds[x].id > -1) && !strcasecmp(opcmds[x].name, code)) {
            if (opcmds[x].add_args) {
                res = opcmds[x].add_args(sub->data + sub->datalen,
                        code, opcmds[x].id, args, state, script, lineno);
                if ((sub->datalen + res + 1) <= max)
                    sub->datalen += res;
                else {
                    ast_log(LOG_WARNING, "No space for '%s' code in subscript '%s' at line %d of %s\n", opcmds[x].name, sub->vname, lineno, script);
                    return -1;
                }
            } else {
                if ((unused = get_token(&args, script, lineno)))
                    ast_log(LOG_WARNING, "'%s' takes no arguments at line %d of %s (token is '%s')\n", opcmds[x].name, lineno, script, unused);
                if ((sub->datalen + 2) <= max) {
                    sub->data[sub->datalen] = opcmds[x].id;
                    sub->datalen++;
                } else {
                    ast_log(LOG_WARNING, "No space for '%s' code in key '%s' at line %d of %s\n", opcmds[x].name, sub->vname, lineno, script);
                    return -1;
                }
            }
            /* Separate commands with 0xff */
            sub->data[sub->datalen] = 0xff;
            sub->datalen++;
            sub->inscount++;
            return 0;
        }
    }
    return -1;
}
 
static int adsi_process(struct adsi_script *state, char *buf, const char *script, int lineno)
{
    char *keyword = get_token(&buf, script, lineno);
    char *args, vname[256], tmp[80], tmp2[80];
    int lrci, wi, event;
    struct adsi_display *disp;
    struct adsi_subscript *newsub;
 
    if (!keyword)
        return 0;
 
    switch(state->state) {
    case STATE_NORMAL:
        if (!strcasecmp(keyword, "DESCRIPTION")) {
            if ((args = get_token(&buf, script, lineno))) {
                if (process_token(state->desc, args, sizeof(state->desc) - 1, ARG_STRING))
                    ast_log(LOG_WARNING, "'%s' is not a valid token for DESCRIPTION at line %d of %s\n", args, lineno, script);
            } else
                ast_log(LOG_WARNING, "Missing argument for DESCRIPTION at line %d of %s\n", lineno, script);
        } else if (!strcasecmp(keyword, "VERSION")) {
            if ((args = get_token(&buf, script, lineno))) {
                if (process_token(&state->ver, args, sizeof(state->ver) - 1, ARG_NUMBER))
                    ast_log(LOG_WARNING, "'%s' is not a valid token for VERSION at line %d of %s\n", args, lineno, script);
            } else
                ast_log(LOG_WARNING, "Missing argument for VERSION at line %d of %s\n", lineno, script);
        } else if (!strcasecmp(keyword, "SECURITY")) {
            if ((args = get_token(&buf, script, lineno))) {
                if (process_token(state->sec, args, sizeof(state->sec) - 1, ARG_STRING | ARG_NUMBER))
                    ast_log(LOG_WARNING, "'%s' is not a valid token for SECURITY at line %d of %s\n", args, lineno, script);
            } else
                ast_log(LOG_WARNING, "Missing argument for SECURITY at line %d of %s\n", lineno, script);
        } else if (!strcasecmp(keyword, "FDN")) {
            if ((args = get_token(&buf, script, lineno))) {
                if (process_token(state->fdn, args, sizeof(state->fdn) - 1, ARG_STRING | ARG_NUMBER))
                    ast_log(LOG_WARNING, "'%s' is not a valid token for FDN at line %d of %s\n", args, lineno, script);
            } else
                ast_log(LOG_WARNING, "Missing argument for FDN at line %d of %s\n", lineno, script);
        } else if (!strcasecmp(keyword, "KEY")) {
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "KEY definition missing name at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(vname, args, sizeof(vname) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "'%s' is not a valid token for a KEY name at line %d of %s\n", args, lineno, script);
                break;
            }
            if (!(state->key = getkeybyname(state, vname, script, lineno))) {
                ast_log(LOG_WARNING, "Out of key space at line %d of %s\n", lineno, script);
                break;
            }
            if (state->key->defined) {
                ast_log(LOG_WARNING, "Cannot redefine key '%s' at line %d of %s\n", vname, lineno, script);
                break;
            }
            if (!(args = get_token(&buf, script, lineno)) || strcasecmp(args, "IS")) {
                ast_log(LOG_WARNING, "Expecting 'IS', but got '%s' at line %d of %s\n", args ? args : "<nothing>", lineno, script);
                break;
            }
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "KEY definition missing short name at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(tmp, args, sizeof(tmp) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "'%s' is not a valid token for a KEY short name at line %d of %s\n", args, lineno, script);
                break;
            }
            if ((args = get_token(&buf, script, lineno))) {
                if (strcasecmp(args, "OR")) {
                    ast_log(LOG_WARNING, "Expecting 'OR' but got '%s' instead at line %d of %s\n", args, lineno, script);
                    break;
                }
                if (!(args = get_token(&buf, script, lineno))) {
                    ast_log(LOG_WARNING, "KEY definition missing optional long name at line %d of %s\n", lineno, script);
                    break;
                }
                if (process_token(tmp2, args, sizeof(tmp2) - 1, ARG_STRING)) {
                    ast_log(LOG_WARNING, "'%s' is not a valid token for a KEY long name at line %d of %s\n", args, lineno, script);
                    break;
                }
            } else {
                ast_copy_string(tmp2, tmp, sizeof(tmp2));
            }
            if (strlen(tmp2) > 18) {
                ast_log(LOG_WARNING, "Truncating full name to 18 characters at line %d of %s\n", lineno, script);
                tmp2[18] = '\0';
            }
            if (strlen(tmp) > 7) {
                ast_log(LOG_WARNING, "Truncating short name to 7 bytes at line %d of %s\n", lineno, script);
                tmp[7] = '\0';
            }
            /* Setup initial stuff */
            state->key->retstr[0] = 0x80;
            /* 1 has the length */
            state->key->retstr[2] = state->key->id;
            /* Put the Full name in */
            memcpy(state->key->retstr + 3, tmp2, strlen(tmp2));
            /* Update length */
            state->key->retstrlen = strlen(tmp2) + 3;
            /* Put trailing 0xff */
            state->key->retstr[state->key->retstrlen++] = 0xff;
            /* Put the short name */
            memcpy(state->key->retstr + state->key->retstrlen, tmp, strlen(tmp));
            /* Update length */
            state->key->retstrlen += strlen(tmp);
            /* Put trailing 0xff */
            state->key->retstr[state->key->retstrlen++] = 0xff;
            /* Record initial length */
            state->key->initlen = state->key->retstrlen;
            state->state = STATE_INKEY;
        } else if (!strcasecmp(keyword, "SUB")) {
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "SUB definition missing name at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(vname, args, sizeof(vname) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "'%s' is not a valid token for a KEY name at line %d of %s\n", args, lineno, script);
                break;
            }
            if (!(state->sub = getsubbyname(state, vname, script, lineno))) {
                ast_log(LOG_WARNING, "Out of subroutine space at line %d of %s\n", lineno, script);
                break;
            }
            if (state->sub->defined) {
                ast_log(LOG_WARNING, "Cannot redefine subroutine '%s' at line %d of %s\n", vname, lineno, script);
                break;
            }
            /* Setup sub */
            state->sub->data[0] = 0x82;
            /* 1 is the length */
            state->sub->data[2] = 0x0; /* Clear extensibility bit */
            state->sub->datalen = 3;
            if (state->sub->id) {
                /* If this isn't the main subroutine, make a subroutine label for it */
                state->sub->data[3] = 9;
                state->sub->data[4] = state->sub->id;
                /* 5 is length */
                state->sub->data[6] = 0xff;
                state->sub->datalen = 7;
            }
            if (!(args = get_token(&buf, script, lineno)) || strcasecmp(args, "IS")) {
                ast_log(LOG_WARNING, "Expecting 'IS', but got '%s' at line %d of %s\n", args ? args : "<nothing>", lineno, script);
                break;
            }
            state->state = STATE_INSUB;
        } else if (!strcasecmp(keyword, "STATE")) {
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "STATE definition missing name at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(vname, args, sizeof(vname) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "'%s' is not a valid token for a STATE name at line %d of %s\n", args, lineno, script);
                break;
            }
            if (getstatebyname(state, vname, script, lineno, 0)) {
                ast_log(LOG_WARNING, "State '%s' is already defined at line %d of %s\n", vname, lineno, script);
                break;
            }
            getstatebyname(state, vname, script, lineno, 1);
        } else if (!strcasecmp(keyword, "FLAG")) {
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "FLAG definition missing name at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(vname, args, sizeof(vname) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "'%s' is not a valid token for a FLAG name at line %d of %s\n", args, lineno, script);
                break;
            }
            if (getflagbyname(state, vname, script, lineno, 0)) {
                ast_log(LOG_WARNING, "Flag '%s' is already defined\n", vname);
                break;
            }
            getflagbyname(state, vname, script, lineno, 1);
        } else if (!strcasecmp(keyword, "DISPLAY")) {
            lrci = 0;
            wi = 0;
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "SUB definition missing name at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(vname, args, sizeof(vname) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "'%s' is not a valid token for a KEY name at line %d of %s\n", args, lineno, script);
                break;
            }
            if (getdisplaybyname(state, vname, script, lineno, 0)) {
                ast_log(LOG_WARNING, "State '%s' is already defined\n", vname);
                break;
            }
            if (!(disp = getdisplaybyname(state, vname, script, lineno, 1)))
                break;
            if (!(args = get_token(&buf, script, lineno)) || strcasecmp(args, "IS")) {
                ast_log(LOG_WARNING, "Missing 'IS' at line %d of %s\n", lineno, script);
                break;
            }
            if (!(args = get_token(&buf, script, lineno))) {
                ast_log(LOG_WARNING, "Missing Column 1 text at line %d of %s\n", lineno, script);
                break;
            }
            if (process_token(tmp, args, sizeof(tmp) - 1, ARG_STRING)) {
                ast_log(LOG_WARNING, "Token '%s' is not valid column 1 text at line %d of %s\n", args, lineno, script);
                break;
            }
            if (strlen(tmp) > 20) {
                ast_log(LOG_WARNING, "Truncating column one to 20 characters at line %d of %s\n", lineno, script);
                tmp[20] = '\0';
            }
            memcpy(disp->data + 5, tmp, strlen(tmp));
            disp->datalen = strlen(tmp) + 5;
            disp->data[disp->datalen++] = 0xff;
 
            args = get_token(&buf, script, lineno);
            if (args && !process_token(tmp, args, sizeof(tmp) - 1, ARG_STRING)) {
                /* Got a column two */
                if (strlen(tmp) > 20) {
                    ast_log(LOG_WARNING, "Truncating column two to 20 characters at line %d of %s\n", lineno, script);
                    tmp[20] = '\0';
                }
                memcpy(disp->data + disp->datalen, tmp, strlen(tmp));
                disp->datalen += strlen(tmp);
                args = get_token(&buf, script, lineno);
            }
            while (args) {
                if (!strcasecmp(args, "JUSTIFY")) {
                    args = get_token(&buf, script, lineno);
                    if (!args) {
                        ast_log(LOG_WARNING, "Qualifier 'JUSTIFY' requires an argument at line %d of %s\n", lineno, script);
                        break;
                    }
                    lrci = getjustifybyname(args);
                    if (lrci < 0) {
                        ast_log(LOG_WARNING, "'%s' is not a valid justification at line %d of %s\n", args, lineno, script);
                        break;
                    }
                } else if (!strcasecmp(args, "WRAP")) {
                    wi = 0x80;
                } else {
                    ast_log(LOG_WARNING, "'%s' is not a known qualifier at line %d of %s\n", args, lineno, script);
                    break;
                }
                args = get_token(&buf, script, lineno);
            }
            if (args) {
                /* Something bad happened */
                break;
            }
            disp->data[0] = 0x81;
            disp->data[1] = disp->datalen - 2;
            disp->data[2] = ((lrci & 0x3) << 6) | disp->id;
            disp->data[3] = wi;
            disp->data[4] = 0xff;
        } else {
            ast_log(LOG_WARNING, "Invalid or Unknown keyword '%s' in PROGRAM\n", keyword);
        }
        break;
    case STATE_INKEY:
        if (process_returncode(state->key, keyword, buf, state, script, lineno)) {
            if (!strcasecmp(keyword, "ENDKEY")) {
                /* Return to normal operation and increment current key */
                state->state = STATE_NORMAL;
                state->key->defined = 1;
                state->key->retstr[1] = state->key->retstrlen - 2;
                state->key = NULL;
            } else {
                ast_log(LOG_WARNING, "Invalid or Unknown keyword '%s' in SOFTKEY definition at line %d of %s\n", keyword, lineno, script);
            }
        }
        break;
    case STATE_INIF:
        if (process_opcode(state->sub, keyword, buf, state, script, lineno)) {
            if (!strcasecmp(keyword, "ENDIF")) {
                /* Return to normal SUB operation and increment current key */
                state->state = STATE_INSUB;
                state->sub->defined = 1;
                /* Store the proper number of instructions */
                state->sub->ifdata[2] = state->sub->ifinscount;
            } else if (!strcasecmp(keyword, "GOTO")) {
                if (!(args = get_token(&buf, script, lineno))) {
                    ast_log(LOG_WARNING, "GOTO clause missing Subscript name at line %d of %s\n", lineno, script);
                    break;
                }
                if (process_token(tmp, args, sizeof(tmp) - 1, ARG_STRING)) {
                    ast_log(LOG_WARNING, "'%s' is not a valid subscript name token at line %d of %s\n", args, lineno, script);
                    break;
                }
                if (!(newsub = getsubbyname(state, tmp, script, lineno)))
                    break;
                /* Somehow you use GOTO to go to another place */
                state->sub->data[state->sub->datalen++] = 0x8;
                state->sub->data[state->sub->datalen++] = state->sub->ifdata[1];
                state->sub->data[state->sub->datalen++] = newsub->id;
                /* Terminate */
                state->sub->data[state->sub->datalen++] = 0xff;
                /* Increment counters */
                state->sub->inscount++;
                state->sub->ifinscount++;
            } else {
                ast_log(LOG_WARNING, "Invalid or Unknown keyword '%s' in IF clause at line %d of %s\n", keyword, lineno, script);
            }
        } else
            state->sub->ifinscount++;
        break;
    case STATE_INSUB:
        if (process_opcode(state->sub, keyword, buf, state, script, lineno)) {
            if (!strcasecmp(keyword, "ENDSUB")) {
                /* Return to normal operation and increment current key */
                state->state = STATE_NORMAL;
                state->sub->defined = 1;
                /* Store the proper length */
                state->sub->data[1] = state->sub->datalen - 2;
                if (state->sub->id) {
                    /* if this isn't main, store number of instructions, too */
                    state->sub->data[5] = state->sub->inscount;
                }
                state->sub = NULL;
            } else if (!strcasecmp(keyword, "IFEVENT")) {
                if (!(args = get_token(&buf, script, lineno))) {
                    ast_log(LOG_WARNING, "IFEVENT clause missing Event name at line %d of %s\n", lineno, script);
                    break;
                }
                if ((event = geteventbyname(args)) < 1) {
                    ast_log(LOG_WARNING, "'%s' is not a valid event\n", args);
                    break;
                }
                if (!(args = get_token(&buf, script, lineno)) || strcasecmp(args, "THEN")) {
                    ast_log(LOG_WARNING, "IFEVENT clause missing 'THEN' at line %d of %s\n", lineno, script);
                    break;
                }
                state->sub->ifinscount = 0;
                state->sub->ifdata = state->sub->data + state->sub->datalen;
                /* Reserve header and insert op codes */
                state->sub->ifdata[0] = 0x1;
                state->sub->ifdata[1] = event;
                /* 2 is for the number of instructions */
                state->sub->ifdata[3] = 0xff;
                state->sub->datalen += 4;
                /* Update Subscript instruction count */
                state->sub->inscount++;
                state->state = STATE_INIF;
            } else {
                ast_log(LOG_WARNING, "Invalid or Unknown keyword '%s' in SUB definition at line %d of %s\n", keyword, lineno, script);
            }
        }
        break;
    default:
        ast_log(LOG_WARNING, "Can't process keyword '%s' in weird state %d\n", keyword, state->state);
    }
    return 0;
}
 
static struct adsi_script *compile_script(const char *script)
{
    FILE *f;
    char fn[256], buf[256], *c;
    int lineno = 0, x, err;
    struct adsi_script *scr;
 
    if (script[0] == '/')
        ast_copy_string(fn, script, sizeof(fn));
    else
        snprintf(fn, sizeof(fn), "%s/%s", ast_config_AST_CONFIG_DIR, script);
 
    if (!(f = fopen(fn, "r"))) {
        ast_log(LOG_WARNING, "Can't open file '%s'\n", fn);
        return NULL;
    }
 
    if (!(scr = ast_calloc(1, sizeof(*scr)))) {
        fclose(f);
        return NULL;
    }
 
    /* Create "main" as first subroutine */
    getsubbyname(scr, "main", NULL, 0);
    while (!feof(f)) {
        if (!fgets(buf, sizeof(buf), f)) {
            continue;
        }
        if (!feof(f)) {
            lineno++;
            /* Trim off trailing return */
            buf[strlen(buf) - 1] = '\0';
            /* Strip comments */
            if ((c = strchr(buf, ';')))
                *c = '\0';
            if (!ast_strlen_zero(buf))
                adsi_process(scr, buf, script, lineno);
        }
    }
    fclose(f);
    /* Make sure we're in the main routine again */
    switch(scr->state) {
    case STATE_NORMAL:
        break;
    case STATE_INSUB:
        ast_log(LOG_WARNING, "Missing ENDSUB at end of file %s\n", script);
        ast_free(scr);
        return NULL;
    case STATE_INKEY:
        ast_log(LOG_WARNING, "Missing ENDKEY at end of file %s\n", script);
        ast_free(scr);
        return NULL;
    }
    err = 0;
 
    /* Resolve all keys and record their lengths */
    for (x = 0; x < scr->numkeys; x++) {
        if (!scr->keys[x].defined) {
            ast_log(LOG_WARNING, "Key '%s' referenced but never defined in file %s\n", scr->keys[x].vname, fn);
            err++;
        }
    }
 
    /* Resolve all subs */
    for (x = 0; x < scr->numsubs; x++) {
        if (!scr->subs[x].defined) {
            ast_log(LOG_WARNING, "Subscript '%s' referenced but never defined in file %s\n", scr->subs[x].vname, fn);
            err++;
        }
        if (x == (scr->numsubs - 1)) {
            /* Clear out extension bit on last message */
            scr->subs[x].data[2] = 0x80;
        }
    }
 
    if (err) {
        ast_free(scr);
        return NULL;
    }
    return scr;
}
 
#ifdef DUMP_MESSAGES
static void dump_message(char *type, char *vname, unsigned char *buf, int buflen)
{
    int x;
    printf("%s %s: [ ", type, vname);
    for (x = 0; x < buflen; x++)
        printf("%02hhx ", buf[x]);
    printf("]\n");
}
#endif
 
static int adsi_prog(struct ast_channel *chan, const char *script)
{
    struct adsi_script *scr;
    int x, bytes;
    unsigned char buf[1024];
 
    if (!(scr = compile_script(script)))
        return -1;
 
    /* Start an empty ADSI Session */
    if (ast_adsi_load_session(chan, NULL, 0, 1) < 1)
        return -1;
 
    /* Now begin the download attempt */
    if (ast_adsi_begin_download(chan, scr->desc, scr->fdn, scr->sec, scr->ver)) {
        /* User rejected us for some reason */
        ast_verb(3, "User rejected download attempt\n");
        ast_log(LOG_NOTICE, "User rejected download on channel %s\n", ast_channel_name(chan));
        ast_free(scr);
        return -1;
    }
 
    bytes = 0;
    /* Start with key definitions */
    for (x = 0; x < scr->numkeys; x++) {
        if (bytes + scr->keys[x].retstrlen > 253) {
            /* Send what we've collected so far */
            if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DOWNLOAD)) {
                ast_log(LOG_WARNING, "Unable to send chunk ending at %d\n", x);
                return -1;
            }
            bytes =0;
        }
        memcpy(buf + bytes, scr->keys[x].retstr, scr->keys[x].retstrlen);
        bytes += scr->keys[x].retstrlen;
#ifdef DUMP_MESSAGES
        dump_message("Key", scr->keys[x].vname, scr->keys[x].retstr, scr->keys[x].retstrlen);
#endif
    }
    if (bytes) {
        if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DOWNLOAD)) {
            ast_log(LOG_WARNING, "Unable to send chunk ending at %d\n", x);
            return -1;
        }
    }
 
    bytes = 0;
    /* Continue with the display messages */
    for (x = 0; x < scr->numdisplays; x++) {
        if (bytes + scr->displays[x].datalen > 253) {
            /* Send what we've collected so far */
            if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DOWNLOAD)) {
                ast_log(LOG_WARNING, "Unable to send chunk ending at %d\n", x);
                return -1;
            }
            bytes =0;
        }
        memcpy(buf + bytes, scr->displays[x].data, scr->displays[x].datalen);
        bytes += scr->displays[x].datalen;
#ifdef DUMP_MESSAGES
        dump_message("Display", scr->displays[x].vname, scr->displays[x].data, scr->displays[x].datalen);
#endif
    }
    if (bytes) {
        if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DOWNLOAD)) {
            ast_log(LOG_WARNING, "Unable to send chunk ending at %d\n", x);
            return -1;
        }
    }
 
    bytes = 0;
    /* Send subroutines */
    for (x = 0; x < scr->numsubs; x++) {
        if (bytes + scr->subs[x].datalen > 253) {
            /* Send what we've collected so far */
            if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DOWNLOAD)) {
                ast_log(LOG_WARNING, "Unable to send chunk ending at %d\n", x);
                return -1;
            }
            bytes =0;
        }
        memcpy(buf + bytes, scr->subs[x].data, scr->subs[x].datalen);
        bytes += scr->subs[x].datalen;
#ifdef DUMP_MESSAGES
        dump_message("Sub", scr->subs[x].vname, scr->subs[x].data, scr->subs[x].datalen);
#endif
    }
    if (bytes) {
        if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DOWNLOAD)) {
            ast_log(LOG_WARNING, "Unable to send chunk ending at %d\n", x);
            return -1;
        }
    }
 
    bytes = 0;
    bytes += ast_adsi_display(buf, ADSI_INFO_PAGE, 1, ADSI_JUST_LEFT, 0, "Download complete.", "");
    bytes += ast_adsi_set_line(buf, ADSI_INFO_PAGE, 1);
    if (ast_adsi_transmit_message(chan, buf, bytes, ADSI_MSG_DISPLAY) < 0)
        return -1;
    if (ast_adsi_end_download(chan)) {
        /* Download failed for some reason */
        ast_verb(3, "Download attempt failed\n");
        ast_log(LOG_NOTICE, "Download failed on %s\n", ast_channel_name(chan));
        ast_free(scr);
        return -1;
    }
    ast_free(scr);
    ast_adsi_unload_session(chan);
    return 0;
}
 
static int adsi_exec(struct ast_channel *chan, const char *data)
{
    int res = 0;
 
    if (ast_strlen_zero(data))
        data = "asterisk.adsi";
 
    if (!ast_adsi_available(chan)) {
        ast_verb(3, "ADSI Unavailable on CPE.  Not bothering to try.\n");
    } else {
        ast_verb(3, "ADSI Available on CPE.  Attempting Upload.\n");
        res = adsi_prog(chan, data);
    }
 
    return res;
}
 
static int unload_module(void)
{
    return ast_unregister_application(app);
}
 
/*!
 * \brief Load the module
 *
 * Module loading including tests for configuration or dependencies.
 * This function can return AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_DECLINE,
 * or AST_MODULE_LOAD_SUCCESS. If a dependency or environment variable fails
 * tests return AST_MODULE_LOAD_FAILURE. If the module can not load the
 * configuration file or other non-critical problem return
 * AST_MODULE_LOAD_DECLINE. On success return AST_MODULE_LOAD_SUCCESS.
 */
static int load_module(void)
{
    if (ast_register_application_xml(app, adsi_exec))
        return AST_MODULE_LOAD_DECLINE;
    return AST_MODULE_LOAD_SUCCESS;
}
 
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Asterisk ADSI Programming Application",
    .support_level = AST_MODULE_SUPPORT_DEPRECATED,
    .load = load_module,
    .unload = unload_module,
    .requires = "res_adsi",
);