C++ rc_log函数代码示例

/** Get the hostname of this machine
 *
 * @param hostname will hold the name of the host.
 * @param len the size of hostname.
 * @return -1 on failure, 0 on success.
 */
int rc_own_hostname(char *hostname, int len)
{
#ifdef HAVE_UNAME
	struct	utsname uts;
#endif

#if defined(HAVE_UNAME)
	if (uname(&uts) < 0)
	{
		rc_log(LOG_ERR,"rc_own_hostname: couldn't get own hostname");
		return -1;
	}
	strlcpy(hostname, uts.nodename, len);
#elif defined(HAVE_GETHOSTNAME)
	if (gethostname(hostname, len) < 0)
	{
		rc_log(LOG_ERR,"rc_own_hostname: couldn't get own hostname");
		return -1;
	}
#elif defined(HAVE_SYSINFO)
	if (sysinfo(SI_HOSTNAME, hostname, len) < 0)
	{
		rc_log(LOG_ERR,"rc_own_hostname: couldn't get own hostname");
		return -1;
	}
#else
	return -1;
#endif

	return 0;
}

VALUE_PAIR *rc_avpair_new (int attrid, void *pval, int len, int vendorcode)
{
	VALUE_PAIR     *vp = (VALUE_PAIR *) NULL;
	DICT_ATTR      *pda;

	if ((pda = rc_dict_getattr (attrid, vendorcode)) == (DICT_ATTR *) NULL)
	{
		rc_log(LOG_ERR,"rc_avpair_new: unknown attribute %d", attrid);
	}
	else
	{
		if ((vp = (VALUE_PAIR *) malloc (sizeof (VALUE_PAIR)))
							!= (VALUE_PAIR *) NULL)
		{
			strncpy (vp->name, pda->name, sizeof (vp->name));
			vp->attribute = attrid;
			vp->vendorcode = vendorcode;
			vp->next = (VALUE_PAIR *) NULL;
			vp->type = pda->type;
			if (rc_avpair_assign (vp, pval, len) == 0)
			{
				return vp;
			}
			free (vp);
			vp = (VALUE_PAIR *) NULL;
		}
		else
		{
			rc_log(LOG_CRIT,"rc_avpair_new: out of memory");
		}
	}
	return vp;
}

/** Find outbound interface address for a given destination
 *
 * Given remote address find local address which the system will use as a source address for sending
 * datagrams to that remote address.
 *
 * @param lia local address.
 * @param ria the remove address.
 * @return 0 in success, -1 on failure, address is filled into the first argument.
 */
int rc_get_srcaddr(struct sockaddr *lia, const struct sockaddr *ria)
{
	int temp_sock;
	socklen_t namelen;

	temp_sock = socket(ria->sa_family, SOCK_DGRAM, 0);
	if (temp_sock == -1) {
		rc_log(LOG_ERR, "rc_get_srcaddr: socket: %s", strerror(errno));
		return -1;
	}

	if (connect(temp_sock, ria, SA_LEN(ria)) != 0) {
		rc_log(LOG_ERR, "rc_get_srcaddr: connect: %s",
		    strerror(errno));
		close(temp_sock);
		return -1;
	}

	namelen = SA_LEN(ria);
	if (getsockname(temp_sock, lia, &namelen) != 0) {
		rc_log(LOG_ERR, "rc_get_srcaddr: getsockname: %s",
		    strerror(errno));
		close(temp_sock);
		return -1;
	}

	close(temp_sock);
	return 0;
}

static int apply_config(rc_handle *rh)
{
	memset(&rh->own_bind_addr, 0, sizeof(rh->own_bind_addr));
	rh->own_bind_addr_set = 0;
	rc_own_bind_addr(rh, &rh->own_bind_addr);
	rh->own_bind_addr_set = 1;
#ifdef HAVE_GNUTLS
        {
                const char *txt;
                int ret;
                txt = rc_conf_str(rh, "serv-auth-type");
                if (txt != NULL) {
                        if (strcasecmp(txt, "dtls") == 0) {
                                ret = rc_init_tls(rh, SEC_FLAG_DTLS);
                        } else if (strcasecmp(txt, "tls") == 0) {
                                ret = rc_init_tls(rh, 0);
                        } else {
                                rc_log(LOG_CRIT, "unknown server authentication type: %s", txt);
                                return -1;
                        }

                        if (ret < 0) {
                                rc_log(LOG_CRIT, "error initializing %s", txt);
                                return -1;
                        }
                }
        }
#endif

	return 0;

}

char *rc_getifname(rc_handle *rh, char *tty)
{
#if defined(BSD4_4) || defined(linux)
	int		fd;

	if ((fd = open(tty, O_RDWR|O_NDELAY)) < 0) {
		rc_log(LOG_ERR, "rc_getifname: can't open %s: %s", tty, strerror(errno));
		return NULL;
	}
#endif

#ifdef BSD4_4
	strcpy(rh->ifname,ttyname(fd));
	if (strlen(rh->ifname) < 1) {
		rc_log(LOG_ERR, "rc_getifname: can't get attached interface of %s: %s", tty, strerror(errno));
		close(fd);
		return NULL;
	}
#elif linux
	if (ioctl(fd, SIOCGIFNAME, rh->ifname) < 0) {
		rc_log(LOG_ERR, "rc_getifname: can't ioctl %s: %s", tty, strerror(errno));
		close(fd);
		return NULL;
	}
#else
	return NULL;
#endif

#if defined(BSD4_4) || defined(linux)
	close(fd);
	return rh->ifname;
#endif
}

/** Make a new attribute-value pair with given parameters
 *
 * @param rh a handle to parsed configuration.
 * @param attrid The attribute of the pair to add (e.g., %PW_USER_NAME).
 * @param pval the value (e.g., the actual username).
 * @param len the length of pval, or -1 if to calculate (in case of strings).
 * @param vendorpec The vendor ID in case of a vendor specific value - 0 otherwise.
 * @return pointer to generated a/v pair when successful, NULL when failure.
 */
VALUE_PAIR *rc_avpair_new (rc_handle const *rh, int attrid, void const *pval, int len, int vendorpec)
{
	VALUE_PAIR     *vp = NULL;
	DICT_ATTR      *pda;

	attrid = attrid | (vendorpec << 16);
	if ((pda = rc_dict_getattr (rh, attrid)) == NULL)
	{
		rc_log(LOG_ERR,"rc_avpair_new: unknown attribute %d", attrid);
		return NULL;
	}
	if (vendorpec != 0 && rc_dict_getvend(rh, vendorpec) == NULL)
	{
		rc_log(LOG_ERR,"rc_avpair_new: unknown Vendor-Id %d", vendorpec);
		return NULL;
	}
	if ((vp = malloc (sizeof (VALUE_PAIR))) != NULL)
	{
		strlcpy (vp->name, pda->name, sizeof (vp->name));
		vp->attribute = attrid;
		vp->next = NULL;
		vp->type = pda->type;
		if (rc_avpair_assign (vp, pval, len) == 0)
		{
			/* XXX: Fix up Digest-Attributes */
			switch (vp->attribute) {
			case PW_DIGEST_REALM:
			case PW_DIGEST_NONCE:
			case PW_DIGEST_METHOD:
			case PW_DIGEST_URI:
			case PW_DIGEST_QOP:
			case PW_DIGEST_ALGORITHM:
			case PW_DIGEST_BODY_DIGEST:
			case PW_DIGEST_CNONCE:
			case PW_DIGEST_NONCE_COUNT:
			case PW_DIGEST_USER_NAME:
				/* overlapping! */
				if (vp->lvalue > AUTH_STRING_LEN - 2)
					vp->lvalue = AUTH_STRING_LEN - 2;
				memmove(&vp->strvalue[2], &vp->strvalue[0], vp->lvalue);
				vp->strvalue[0] = vp->attribute - PW_DIGEST_REALM + 1;
				vp->lvalue += 2;
				vp->strvalue[1] = vp->lvalue;
				vp->strvalue[vp->lvalue] = '\0';
				vp->attribute = PW_DIGEST_ATTRIBUTES;
			default:
				break;
			}
			return vp;
		}
		free (vp);
		vp = NULL;
	}
	else
	{
		rc_log(LOG_CRIT,"rc_avpair_new: out of memory");
	}

	return vp;
}

/**
 * @brief Read data from a resource (unlocked)
 *
 * @param resouce The resource to read from
 *
 * @return The same return value as read_packet
 */
int r_read(Resource *resource)
{
    int ret = RESOURCE_EOF;

    g_mutex_lock(resource->lock);
    if (!resource->eor)
        switch( (ret = resource->demuxer->read_packet(resource)) ) {
        case RESOURCE_OK:
            break;
        case RESOURCE_EOF:
            rc_log(RC_LOG_INFO,
                    "r_read_unlocked: %s read_packet() end of file.",
                    resource->info->mrl);
            resource->eor = TRUE;
            break;
        default:
            rc_log(RC_LOG_FATAL,
                    "r_read_unlocked: %s read_packet() error.",
                    resource->info->mrl);
            break;
        }

    g_mutex_unlock(resource->lock);

    return ret;
}

unsigned char rc_get_seqnbr(void)
{
	FILE *sf;
	int tries = 1;
	int seq_nbr, pos;
	char *seqfile = rc_conf_str("seqfile");

	if ((sf = fopen(seqfile, "a+")) == NULL)
	{
		rc_log(LOG_ERR,"rc_get_seqnbr: couldn't open sequence file %s: %s", seqfile, strerror(errno));
		/* well, so guess a sequence number */
		return rc_guess_seqnbr();
	}

	while (do_lock_exclusive(fileno(sf))!= 0)
	{
		if (errno != EWOULDBLOCK) {
			rc_log(LOG_ERR, "rc_get_seqnbr: flock failure: %s: %s", seqfile, strerror(errno));
			fclose(sf);
			return rc_guess_seqnbr();
		}
		tries++;
		if (tries <= 10)
			rc_mdelay(500);
		else
			break;
	}

	if (tries > 10) {
		rc_log(LOG_ERR,"rc_get_seqnbr: couldn't get lock after %d tries: %s", tries-1, seqfile);
		fclose(sf);
		return rc_guess_seqnbr();
	}

	pos = ftell(sf);
	rewind(sf);
	if (fscanf(sf, "%d", &seq_nbr) != 1) {
		if (pos != ftell(sf)) {
			/* file was not empty */
			rc_log(LOG_ERR,"rc_get_seqnbr: fscanf failure: %s", seqfile);
		}
		seq_nbr = rc_guess_seqnbr();
	}

	rewind(sf);
	ftruncate(fileno(sf),0);
	fprintf(sf,"%d\n", (seq_nbr+1) & UCHAR_MAX);

	fflush(sf); /* fflush because a process may read it between the do_unlock and fclose */

	if (do_unlock(fileno(sf)) != 0)
		rc_log(LOG_ERR, "rc_get_seqnbr: couldn't release lock on %s: %s", seqfile, strerror(errno));

	fclose(sf);

	return (unsigned char)seq_nbr;
}

static int set_option_auo(char const *filename, int line, OPTION *option, char const *p)
{
	int *iptr;
	char *p_dupe = NULL;
	char *p_pointer = NULL;
	char *p_save = NULL;

	p_dupe = strdup(p);

	if (p_dupe == NULL) {
		rc_log(LOG_WARNING, "%s: line %d: bogus option value", filename, line);
		return -1;
	}

	if ((iptr = malloc(sizeof(iptr))) == NULL) {
			rc_log(LOG_CRIT, "read_config: out of memory");
			free(p_dupe);
			return -1;
	}

	*iptr = 0;
	/*if(strstr(p_dupe,", \t") != NULL) {*/
		p_pointer = strtok_r(p_dupe, ", \t", &p_save);
	/*}*/

	if (!strncmp(p_pointer, "local", 5))
			*iptr = AUTH_LOCAL_FST;
	else if (!strncmp(p_pointer, "radius", 6))
			*iptr = AUTH_RADIUS_FST;
	else {
		rc_log(LOG_ERR,"%s: auth_order: unknown keyword: %s", filename, p);
		free(iptr);
		free(p_dupe);
		return -1;
	}

	p_pointer = strtok_r(NULL, ", \t", &p_save);

	if (p_pointer && (*p_pointer != '\0')) {
		if ((*iptr & AUTH_RADIUS_FST) && !strcmp(p_pointer, "local"))
			*iptr = (*iptr) | AUTH_LOCAL_SND;
		else if ((*iptr & AUTH_LOCAL_FST) && !strcmp(p_pointer, "radius"))
			*iptr = (*iptr) | AUTH_RADIUS_SND;
		else {
			rc_log(LOG_ERR,"%s: auth_order: unknown or unexpected keyword: %s", filename, p);
			free(iptr);
			free(p_dupe);
			return -1;
		}
	}

	option->val = (void *) iptr;

	free(p_dupe);
	return 0;
}

/**
 * @brief Open a new resource and create a new instance
 *
 * @param srv The server object for the vhost requesting the resource
 * @param inner_path The path, relative to the avroot, for the
 *                   resource
 *
 * @return A new Resource object
 * @retval NULL Error while opening resource
 */
Resource *r_open(const char *inner_path, OpenMode mode)
{
    Resource *r;
    const Demuxer *dmx;
    gchar *mrl, *path;
	gint ls, ls_store;		/* ls: use demuxer_ls; ls_store: demuxer_ls with history streams */

	path = get_media_path(inner_path, &ls, &ls_store);
	mrl = g_strdup_printf("%s%s", RESOURCE_ROOT, path);
	g_free(path);

    if ((dmx = r_find_demuxer(mrl)) == NULL)
    {
        rc_log(RC_LOG_DEBUG,
                "[MT] Could not find a valid demuxer for resource %s\n",
                mrl);
        goto error;
    }

    rc_log(RC_LOG_DEBUG, "[MT] registrered demuxer \"%s\" for resource"
                               "\"%s\"\n", dmx->info->name, mrl);

    r = g_slice_new0(Resource);
    r->info = g_slice_new0(ResourceInfo);
    r->info->mrl = mrl;
    r->info->mtime = 0;
    r->info->name = g_path_get_basename(mrl);
    r->info->seekable = (dmx->seek != NULL);

    if (ls && !ls_store)
		r->info->seekable = FALSE;

    r->demuxer = dmx;
	r->mode = mode;

    if (r->demuxer->init(r))
    {
        r_free_cb(r, NULL);
        return NULL;
    }

    /* Now that we have opened the actual resource we can proceed with
     * the extras */

    r->lock = g_mutex_new();

#ifdef HAVE_METADATA
    cpd_find_request(srv, r, filename);
#endif

    return r;
 error:
    g_free(mrl);
    return NULL;
}

/** Allow a config option to be added to rc_handle from inside a program
 *
 * @param rh a handle to parsed configuration.
 * @param option_name the name of the option.
 * @param option_val the value to be added.
 * @param source typically should be %__FILE__ or %__func__ for logging purposes.
 * @param line %__LINE__ for logging purposes.
 * @return 0 on success, -1 on failure.
 */
int rc_add_config(rc_handle *rh, char const *option_name, char const *option_val, char const *source, int line)
{
	OPTION *option;

	if ((option = find_option(rh, option_name, OT_ANY)) == NULL)
	{
		rc_log(LOG_ERR, "ERROR: unrecognized option: %s", option_name);
		return -1;
	}

	if (option->status != ST_UNDEF)
	{
		rc_log(LOG_ERR, "ERROR: duplicate option: %s", option_name);
		return -1;
	}

	switch (option->type) {
		case OT_STR:
			if (set_option_str(source, line, option, option_val) < 0) {
				return -1;
			}
			break;
		case OT_INT:
			if (set_option_int(source, line, option, option_val) < 0) {
				return -1;
			}
			break;
		case OT_SRV:
			if (set_option_srv(source, line, option, option_val) < 0) {
				return -1;
			}
			break;
		case OT_AUO:
			if (set_option_auo(source, line, option, option_val) < 0) {
				return -1;
			}
			break;
		default:
			rc_log(LOG_CRIT, "rc_add_config: impossible case branch!");
			abort();
	}

	if (strcmp(option->name, "bindaddr") == 0) {
		memset(&rh->own_bind_addr, 0, sizeof(rh->own_bind_addr));
		rh->own_bind_addr_set = 0;
		rc_own_bind_addr(rh, &rh->own_bind_addr);
		rh->own_bind_addr_set = 1;
	}

	return 0;
}

static int set_option_srv(char *filename, int line, OPTION *option, char *p)
{
	SERVER *serv;
	char *q;
	struct servent *svp;
	int i;

	if (p == NULL) {
		rc_log(LOG_ERR, "%s: line %d: bogus option value", filename, line);
		return (-1);
	}

	serv = (SERVER *) option->val;

	for (i = 0; i < serv->max; i++) {
		free(serv->name[i]);
	}
	serv->max = 0;

	while ((p = strtok(p, ", \t")) != NULL) {

		if ((q = strchr(p,':')) != NULL) {
			*q = '\0';
			q++;
			serv->port[serv->max] = atoi(q);
		} else {
			if (!strcmp(option->name,"authserver"))
				if ((svp = getservbyname ("radius", "udp")) == NULL)
					serv->port[serv->max] = PW_AUTH_UDP_PORT;
				else
					serv->port[serv->max] = ntohs ((unsigned int) svp->s_port);
			else if (!strcmp(option->name, "acctserver"))
				if ((svp = getservbyname ("radacct", "udp")) == NULL)
					serv->port[serv->max] = PW_ACCT_UDP_PORT;
				else
					serv->port[serv->max] = ntohs ((unsigned int) svp->s_port);
			else {
				rc_log(LOG_ERR, "%s: line %d: no default port for %s", filename, line, option->name);
				return (-1);
			}
		}

		serv->name[serv->max++] = strdup(p);

		p = NULL;
	}

	return 0;
}

/** Find our source address
 *
 * Get the IP address to be used as a source address
 * for sending requests in host order.
 *
 * @param rh a handle to parsed configuration
 * @param lia the local address to listen to
 *
 **/
void rc_own_bind_addr(rc_handle *rh, struct sockaddr_storage *lia)
{
	char *txtaddr = rc_conf_str(rh, "bindaddr");
	struct addrinfo *info;

	if (rh->own_bind_addr_set) {
		memcpy(lia, &rh->own_bind_addr, SS_LEN(&rh->own_bind_addr));
		return;
	}

	memset(lia, 0, sizeof(*lia));
	if (txtaddr == NULL || txtaddr[0] == '*') {
		((struct sockaddr_in*)lia)->sin_family = AF_INET;
		((struct sockaddr_in*)lia)->sin_addr.s_addr = INADDR_ANY;
	} else {
		info = rc_getaddrinfo (txtaddr, PW_AI_PASSIVE);
		if (info == NULL) {
			rc_log(LOG_ERR, "rc_own_ipaddress: couldn't get IP address from bindaddr");
			((struct sockaddr_in*)lia)->sin_family = AF_INET;
			((struct sockaddr_in*)lia)->sin_addr.s_addr = INADDR_ANY;
			return;
		}

		memcpy(lia, info->ai_addr, info->ai_addrlen);
       }

       return;
}

gint r_ctrl(const char *inner_path, gint cmd, void *value)
{
    const Demuxer *dmx;
    gchar *mrl, *path;
	gint ls, ls_store, ret = -1;

	path = get_media_path(inner_path, &ls, &ls_store);
	mrl = g_strdup_printf("%s%s", RESOURCE_ROOT, path);
	g_free(path);

	if (ls)
	{
	    if ((dmx = r_find_demuxer(mrl)) == NULL)
	    {
	        rc_log(RC_LOG_DEBUG,
	                "[MT] Could not find a valid demuxer for '%s'\n",
	                mrl);
	        g_free(mrl);
	        return -1;
	    }

		if (dmx->ctrl_track)
			ret = (*dmx->ctrl_track)(mrl, cmd, value);
		g_free(mrl);
		return ret;
	}

	g_free(mrl);
	return -1;
}

/** Assigns the given value to an attribute-value pair
 *
 * @param vp a pointer to a #VALUE_PAIR structure.
 * @param pval the value (e.g., the actual username).
 * @param len the length of @pval, or -1 if to calculate (in case of strings).
 * @return 0 on success or -1 on failure.
 */
int rc_avpair_assign (VALUE_PAIR *vp, void const *pval, int len)
{

	switch (vp->type)
	{
		case PW_TYPE_STRING:
			if (len == -1)
				len = (uint32_t)strlen((char const *)pval);
			if (len > AUTH_STRING_LEN) {
		        	rc_log(LOG_ERR, "rc_avpair_assign: bad attribute length");
		        	return -1;
			}
			memcpy(vp->strvalue, (char const *)pval, len);
			vp->strvalue[len] = '\0';
			vp->lvalue = len;
			break;

		case PW_TYPE_DATE:
		case PW_TYPE_INTEGER:
	        case PW_TYPE_IPADDR:
			vp->lvalue = * (uint32_t *) pval;
			break;
	        case PW_TYPE_IPV6ADDR:
			if (len != 16) {
		        	rc_log(LOG_ERR, "rc_avpair_assign: bad IPv6 length");
		        	return -1;
			}
			memcpy(vp->strvalue, (char const *)pval, len);
			vp->lvalue = len;
			break;

	        case PW_TYPE_IPV6PREFIX:
			if (len < 2 || len > 18) {
		        	rc_log(LOG_ERR, "rc_avpair_assign: bad IPv6 prefix length");
		        	return -1;
			}
			memcpy(vp->strvalue, (char const *)pval, len);
			vp->lvalue = len;
			break;

		default:
			rc_log(LOG_ERR, "rc_avpair_assign: unknown attribute %d", vp->type);
			return -1;
	}
	return 0;
}