static char *
ngx_http_image_filter_offset(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf)
{
ngx_http_image_filter_conf_t *imcf = conf;
ngx_str_t *value;
ngx_http_complex_value_t cv;
ngx_http_compile_complex_value_t ccv;
value = cf->args->elts;
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[1];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
imcf->offset_x = ngx_http_image_filter_value(&value[1]);
} else {
imcf->oxcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
if (imcf->oxcv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->oxcv = cv;
}
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[2];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
imcf->offset_y = ngx_http_image_filter_value(&value[2]);
} else {
imcf->oycv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
if (imcf->oycv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->oycv = cv;
}
return NGX_CONF_OK;
}
static ngx_uint_t
ngx_http_image_filter_get_value(ngx_http_request_t *r,
ngx_http_complex_value_t *cv, ngx_uint_t v)
{
ngx_str_t val;
if (cv == NULL)
{
return v;
}
if (ngx_http_complex_value(r, cv, &val) != NGX_OK)
{
return 0;
}
return ngx_http_image_filter_value(&val);
}
static char *
ngx_http_image_filter_sharpen(ngx_conf_t *cf, ngx_command_t *cmd,
void *conf)
{
ngx_http_image_filter_conf_t *imcf = conf;
ngx_str_t *value;
ngx_int_t n;
ngx_http_complex_value_t cv;
ngx_http_compile_complex_value_t ccv;
value = cf->args->elts;
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[1];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
n = ngx_http_image_filter_value(&value[1]);
if (n < 0) {
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
"invalid value \"%V\"", &value[1]);
return NGX_CONF_ERROR;
}
imcf->sharpen = (ngx_uint_t) n;
} else {
imcf->shcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
if (imcf->shcv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->shcv = cv;
}
return NGX_CONF_OK;
}
static char *
ngx_http_image_filter(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
{
ngx_http_image_filter_conf_t *imcf = conf;
ngx_str_t *value;
ngx_int_t n;
ngx_uint_t i;
ngx_http_complex_value_t cv;
ngx_http_compile_complex_value_t ccv;
value = cf->args->elts;
i = 1;
if (cf->args->nelts == 2) {
if (ngx_strcmp(value[i].data, "off") == 0) {
imcf->filter = NGX_HTTP_IMAGE_OFF;
} else if (ngx_strcmp(value[i].data, "test") == 0) {
imcf->filter = NGX_HTTP_IMAGE_TEST;
} else if (ngx_strcmp(value[i].data, "size") == 0) {
imcf->filter = NGX_HTTP_IMAGE_SIZE;
} else {
goto failed;
}
return NGX_CONF_OK;
} else if (cf->args->nelts == 3) {
if (ngx_strcmp(value[i].data, "rotate") == 0) {
if (imcf->filter != NGX_HTTP_IMAGE_RESIZE
&& imcf->filter != NGX_HTTP_IMAGE_CROP)
{
imcf->filter = NGX_HTTP_IMAGE_ROTATE;
}
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[++i];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
n = ngx_http_image_filter_value(&value[i]);
if (n != 90 && n != 180 && n != 270) {
goto failed;
}
imcf->angle = (ngx_uint_t) n;
} else {
imcf->acv = ngx_palloc(cf->pool,
sizeof(ngx_http_complex_value_t));
if (imcf->acv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->acv = cv;
}
return NGX_CONF_OK;
} else {
goto failed;
}
}
if (ngx_strcmp(value[i].data, "resize") == 0) {
imcf->filter = NGX_HTTP_IMAGE_RESIZE;
} else if (ngx_strcmp(value[i].data, "crop") == 0) {
imcf->filter = NGX_HTTP_IMAGE_CROP;
} else {
goto failed;
}
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[++i];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
n = ngx_http_image_filter_value(&value[i]);
if (n == 0) {
goto failed;
}
imcf->width = (ngx_uint_t) n;
} else {
imcf->wcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
if (imcf->wcv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->wcv = cv;
}
ngx_memzero(&ccv, sizeof(ngx_http_compile_complex_value_t));
ccv.cf = cf;
ccv.value = &value[++i];
ccv.complex_value = &cv;
if (ngx_http_compile_complex_value(&ccv) != NGX_OK) {
return NGX_CONF_ERROR;
}
if (cv.lengths == NULL) {
n = ngx_http_image_filter_value(&value[i]);
if (n == 0) {
goto failed;
}
imcf->height = (ngx_uint_t) n;
} else {
imcf->hcv = ngx_palloc(cf->pool, sizeof(ngx_http_complex_value_t));
if (imcf->hcv == NULL) {
return NGX_CONF_ERROR;
}
*imcf->hcv = cv;
}
return NGX_CONF_OK;
failed:
ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"",
&value[i]);
return NGX_CONF_ERROR;
}
