smsc.c

gnu的专业网关smpp协议支持源代码。

/*
 * smsc.c - implement interface to SMS centers as defined by smsc.h
 *
 * Lars Wirzenius and Kalle Marjola for WapIT Ltd.
 */

/* NOTE: private functions (only for smsc_* use) are named smscenter_*,
 * public functions (used by gateway) are named smsc_*
 */

#include <errno.h>
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <sys/time.h>

#include "gwlib/gwlib.h"
#include "smsc.h"
#include "smsc_p.h"
#include "msg.h"

/*
 * Maximum number of characters for read_into_buffer to read at a time.
 */
#define MAX_READ_INTO_BUFFER	(1024)


static void smscenter_lock(SMSCenter *smsc);
static void smscenter_unlock(SMSCenter *smsc);

/*--------------------------------------------------------------------
 * TODO: WAP WDP functions!
 */


/*--------------------------------------------------------------------
 * smscenter functions
 */



SMSCenter *smscenter_construct(void)
{
    SMSCenter *smsc;
    static int next_id = 1;

    smsc = gw_malloc(sizeof(SMSCenter));

    smsc->killed = 0;
    smsc->type = SMSC_TYPE_DELETED;
    smsc->preferred_prefix = NULL;
    smsc->allowed_prefix = NULL;
    smsc->denied_prefix = NULL;
    smsc->alt_charset = 0;
    smsc->keepalive = 0;

    smsc->mutex = mutex_create();

    sprintf(smsc->name, "Unknown SMSC");
    smsc->id = next_id++;

    /* FAKE */
    smsc->hostname = NULL;
    smsc->port = -1;
    smsc->socket = -1;

    /* CIMD */
    smsc->cimd_hostname = NULL;
    smsc->cimd_port = -1;
    smsc->cimd_username = NULL;
    smsc->cimd_password = NULL;

    /* CIMD 2 */
    smsc->cimd2_hostname = NULL;
    smsc->cimd2_port = -1;
    smsc->cimd2_username = NULL;
    smsc->cimd2_password = NULL;
    smsc->cimd2_send_seq = 1;
    smsc->cimd2_receive_seq = 0;
    smsc->cimd2_inbuffer = NULL;
    smsc->cimd2_received = NULL;
    smsc->cimd2_error = 0;
    smsc->cimd2_next_ping = 0;

    /* EMI */
    smsc->emi_phonenum = NULL;
    smsc->emi_serialdevice = NULL;
    smsc->emi_username = NULL;
    smsc->emi_password = NULL;

    /* EMI IP */
    smsc->emi_hostname = NULL;
    smsc->emi_port = -1;
    smsc->emi_backup_fd = -1;
    smsc->emi_backup_port = -1;
    smsc->emi_backup_allow_ip = NULL;
    smsc->emi_our_port = -1;
    smsc->emi_secondary_fd = -1;

    /* SEMA SMS2000 */

    smsc->sema_smscnua = NULL;
    smsc->sema_homenua = NULL;
    smsc->sema_serialdevice = NULL;
    smsc->sema_fd = -1;

    /* SEMA SMS2000 OIS X.25 */
    smsc->ois_alive = 0;
    smsc->ois_alive2 = 0;
    smsc->ois_received_mo = NULL;
    smsc->ois_ack_debt = 0;
    smsc->ois_flags = 0;
    smsc->ois_listening_socket = -1;
    smsc->ois_socket = -1;
    smsc->ois_buflen = 0;
    smsc->ois_bufsize = 0;
    smsc->ois_buffer = 0;

    /* AT Wireless modems  (GSM 03.40 version 7.4.0) */

    smsc->at_serialdevice = NULL;
    smsc->at_fd = -1;
    smsc->at_modemtype = NULL;
    smsc->at_received = NULL;
    smsc->at_inbuffer = NULL;
    smsc->at_pin = NULL;
    smsc->at_validityperiod = NULL;
    smsc->at_alt_dcs = 0;

    /* add new SMSCes here */

    /* Memory */
    smsc->buflen = 0;
    smsc->bufsize = 10*1024;
    smsc->buffer = gw_malloc(smsc->bufsize);
    memset(smsc->buffer, 0, smsc->bufsize);

    return smsc;
}


void smscenter_destruct(SMSCenter *smsc)
{
    if (smsc == NULL)
        return;

    /* FAKE */
    gw_free(smsc->hostname);

    /* CIMD */
    gw_free(smsc->cimd_hostname);
    gw_free(smsc->cimd_username);
    gw_free(smsc->cimd_password);

    /* CIMD 2 */
    octstr_destroy(smsc->cimd2_hostname);
    octstr_destroy(smsc->cimd2_username);
    octstr_destroy(smsc->cimd2_password);
    octstr_destroy(smsc->cimd2_inbuffer);
    octstr_destroy(smsc->sender_prefix);
    list_destroy(smsc->cimd2_received, NULL);

    /* EMI */
    gw_free(smsc->emi_phonenum);
    gw_free(smsc->emi_serialdevice);
    gw_free(smsc->emi_username);
    gw_free(smsc->emi_password);

    /* EMI IP */
    gw_free(smsc->emi_hostname);
    gw_free(smsc->emi_backup_allow_ip);

    /* SEMA */
    gw_free(smsc->sema_smscnua);
    gw_free(smsc->sema_homenua);
    gw_free(smsc->sema_serialdevice);

    /* OIS */
    ois_delete_queue(smsc);
    gw_free(smsc->ois_buffer);

    /* AT */
    gw_free(smsc->at_serialdevice);
    gw_free(smsc->at_modemtype);
    gw_free(smsc->at_pin);
    list_destroy(smsc->at_received, NULL);
    gw_free(smsc->at_inbuffer);

    /* add new SMSCes here */

    /* Other fields */
    mutex_destroy(smsc->mutex);

    /* Memory */
    gw_free(smsc->buffer);
    gw_free(smsc);
}




int smscenter_submit_msg(SMSCenter *smsc, Msg *msg)
{
    smscenter_lock(smsc);

    switch (smsc->type) {

    case SMSC_TYPE_CIMD:
        if (cimd_submit_msg(smsc, msg) == -1)
            goto error;
        break;

    case SMSC_TYPE_CIMD2:
        if (cimd2_submit_msg(smsc, msg) == -1)
            goto error;
        break;

    case SMSC_TYPE_EMI:
    case SMSC_TYPE_EMI_IP:
        if (emi_submit_msg(smsc, msg) == -1)
            goto error;
        break;

    case SMSC_TYPE_SEMA_X28:
        if (sema_submit_msg(smsc, msg) == -1)
            goto error;
        break;

    case SMSC_TYPE_OIS:
        if (ois_submit_msg(smsc, msg) == -1)
            goto error;
        break;

    case SMSC_TYPE_AT:
        if (at_submit_msg(smsc, msg) == -1)
            goto error;
        break;

        /* add new SMSCes here */

    default:
        goto error;
    }

    smscenter_unlock(smsc);
    return 0;

error:
    smscenter_unlock(smsc);
    return -1;
}



int smscenter_receive_msg(SMSCenter *smsc, Msg **msg)
{
    int ret;

    smscenter_lock(smsc);

    switch (smsc->type) {

    case SMSC_TYPE_CIMD:
        ret = cimd_receive_msg(smsc, msg);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_CIMD2:
        ret = cimd2_receive_msg(smsc, msg);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_EMI:
    case SMSC_TYPE_EMI_IP:
        ret = emi_receive_msg(smsc, msg);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_OIS:
        ret = ois_receive_msg(smsc, msg);
        if (ret == -1)
            goto error;
        break;


    case SMSC_TYPE_SEMA_X28:
        ret = sema_receive_msg(smsc, msg);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_AT:
        ret = at_receive_msg(smsc, msg);
        if (ret == -1)
            goto error;
        break;

    default:
        goto error;

    }
    smscenter_unlock(smsc);

    /* If the SMSC didn't set the timestamp, set it here. */
    if (ret == 1 && msg_type(*msg) == sms && (*msg)->sms.time == 0)
        time(&(*msg)->sms.time);

    return ret;

error:
    smscenter_unlock(smsc);
    return -1;
}


int smscenter_pending_smsmessage(SMSCenter *smsc)
{
    int ret;

    smscenter_lock(smsc);

    switch (smsc->type) {

    case SMSC_TYPE_CIMD:
        ret = cimd_pending_smsmessage(smsc);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_CIMD2:
        ret = cimd2_pending_smsmessage(smsc);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_EMI:
    case SMSC_TYPE_EMI_IP:
        ret = emi_pending_smsmessage(smsc);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_SEMA_X28:
        ret = sema_pending_smsmessage(smsc);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_OIS:
        ret = ois_pending_smsmessage(smsc);
        if (ret == -1)
            goto error;
        break;

    case SMSC_TYPE_AT:
        ret = at_pending_smsmessage(smsc);
        if (ret == -1)
            goto error;
        break;

    default:
        goto error;
    }

    smscenter_unlock(smsc);
    return ret;

error:
    error(0, "smscenter_pending_smsmessage is failing");
    smscenter_unlock(smsc);
    return -1;
}


int smscenter_read_into_buffer(SMSCenter *smsc)
{
    char *p;
    int ret, result;
    fd_set read_fd;
    struct timeval tv, tvinit;
    size_t bytes_read;

    tvinit.tv_sec = 0;
    tvinit.tv_usec = 1000;

    bytes_read = 0;
    result = 0;
    for (;;) {
        FD_ZERO(&read_fd);
        FD_SET(smsc->socket, &read_fd);
        tv = tvinit;
        ret = select(smsc->socket + 1, &read_fd, NULL, NULL, &tv);
        if (ret == -1) {
            if (errno == EINTR) goto got_data;
            if (errno == EAGAIN) goto got_data;