Ejemplo n.º 1
0
/*
 * open a stream and go to the right position
 *
 * note: when opening for write and seeking to the beginning of
 * the stream, truncate the file
 */
__private FILE *uci_open_stream(struct uci_context *ctx, const char *filename, int pos, bool write, bool create)
{
	struct stat statbuf;
	FILE *file = NULL;
	int fd, ret;
	int flags = (write ? O_RDWR : O_RDONLY);
	mode_t mode = UCI_FILEMODE;
	char *name = NULL;
	char *filename2 = NULL;

	if (create) {
		flags |= O_CREAT;
		name = basename((char *) filename);
		if ((asprintf(&filename2, "%s/%s", ctx->confdir, name) < 0) || !filename2) {
			UCI_THROW(ctx, UCI_ERR_MEM);
		} else {
			if (stat(filename2, &statbuf) == 0)
				mode = statbuf.st_mode;

			free(filename2);
		}
	}

	if (!write && ((stat(filename, &statbuf) < 0) ||
		((statbuf.st_mode & S_IFMT) != S_IFREG))) {
		UCI_THROW(ctx, UCI_ERR_NOTFOUND);
	}

	fd = open(filename, flags, mode);
	if (fd < 0)
		goto error;

	ret = flock(fd, (write ? LOCK_EX : LOCK_SH));
	if ((ret < 0) && (errno != ENOSYS))
		goto error;

	ret = lseek(fd, 0, pos);

	if (ret < 0)
		goto error;

	file = fdopen(fd, (write ? "w+" : "r"));
	if (file)
		goto done;

error:
	UCI_THROW(ctx, UCI_ERR_IO);
done:
	return file;
}
Ejemplo n.º 2
0
__private void *uci_realloc(struct uci_context *ctx, void *ptr, size_t size)
{
	ptr = realloc(ptr, size);
	if (!ptr)
		UCI_THROW(ctx, UCI_ERR_MEM);

	return ptr;
}
Ejemplo n.º 3
0
__private void uci_parse_error(struct uci_context *ctx, char *pos, char *reason)
{
	struct uci_parse_context *pctx = ctx->pctx;

	pctx->reason = reason;
	pctx->byte = pos - pctx->buf;
	UCI_THROW(ctx, UCI_ERR_PARSE);
}
Ejemplo n.º 4
0
int uci_parse_ptr(struct uci_context *ctx, struct uci_ptr *ptr, char *str)
{
	char *last = NULL;
	char *tmp;

	UCI_HANDLE_ERR(ctx);
	UCI_ASSERT(ctx, str);
	UCI_ASSERT(ctx, ptr);

	memset(ptr, 0, sizeof(struct uci_ptr));

	/* value */
	last = strchr(str, '=');
	if (last) {
		*last = 0;
		last++;
		ptr->value = last;
	}

	ptr->package = strsep(&str, ".");
	if (!ptr->package)
		goto error;

	ptr->section = strsep(&str, ".");
	if (!ptr->section) {
		ptr->target = UCI_TYPE_PACKAGE;
		goto lastval;
	}

	ptr->option = strsep(&str, ".");
	if (!ptr->option) {
		ptr->target = UCI_TYPE_SECTION;
		goto lastval;
	} else {
		ptr->target = UCI_TYPE_OPTION;
	}

	tmp = strsep(&str, ".");
	if (tmp)
		goto error;

lastval:
	if (ptr->package && !uci_validate_package(ptr->package))
		goto error;
	if (ptr->section && !uci_validate_name(ptr->section))
		ptr->flags |= UCI_LOOKUP_EXTENDED;
	if (ptr->option && !uci_validate_name(ptr->option))
		goto error;
	if (ptr->value && !uci_validate_text(ptr->value))
		goto error;

	return 0;

error:
	memset(ptr, 0, sizeof(struct uci_ptr));
	UCI_THROW(ctx, UCI_ERR_PARSE);
}
Ejemplo n.º 5
0
__private char *uci_strdup(struct uci_context *ctx, const char *str)
{
	char *ptr;

	ptr = strdup(str);
	if (!ptr)
		UCI_THROW(ctx, UCI_ERR_MEM);

	return ptr;
}
Ejemplo n.º 6
0
__private void *uci_malloc(struct uci_context *ctx, size_t size)
{
	void *ptr;

	ptr = malloc(size);
	if (!ptr)
		UCI_THROW(ctx, UCI_ERR_MEM);
	memset(ptr, 0, size);

	return ptr;
}
Ejemplo n.º 7
0
Archivo: util.c Proyecto: darcyg/uci
/*
 * open a stream and go to the right position
 *
 * note: when opening for write and seeking to the beginning of
 * the stream, truncate the file
 */
__private FILE *uci_open_stream(struct uci_context *ctx, const char *filename, int pos, bool write, bool create)
{
	struct stat statbuf;
	FILE *file = NULL;
	int fd, ret;
	int mode = (write ? O_RDWR : O_RDONLY);

	if (create)
		mode |= O_CREAT;

	if (!write && ((stat(filename, &statbuf) < 0) ||
		((statbuf.st_mode &  S_IFMT) != S_IFREG))) {
		UCI_THROW(ctx, UCI_ERR_NOTFOUND);
	}

	fd = open(filename, mode, UCI_FILEMODE);
	if (fd < 0)
		goto error;

	ret = flock(fd, (write ? LOCK_EX : LOCK_SH));
	if ((ret < 0) && (errno != ENOSYS))
		goto error;

	ret = lseek(fd, 0, pos);

	if (ret < 0)
		goto error;

	file = fdopen(fd, (write ? "w+" : "r"));
	if (file)
		goto done;

error:
	UCI_THROW(ctx, UCI_ERR_IO);
done:
	return file;
}