static ngx_int_t ngx_http_small_light_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
ngx_http_small_light_conf_t *loc_conf;
ngx_http_small_light_ctx_t *ctx;
ngx_buf_t *b;
ngx_pool_cleanup_t *cln;
ngx_chain_t out;
ngx_int_t rc;
size_t content_type_len;
if (in == NULL) {
return ngx_http_next_body_filter(r, in);
}
loc_conf = ngx_http_get_module_loc_conf(r, ngx_http_small_light_module);
if (!loc_conf->enable) {
return ngx_http_next_body_filter(r, in);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_small_light_module);
if (ctx == NULL) {
return ngx_http_next_body_filter(r, in);
}
if((rc = ngx_http_small_light_image_read(r, in, loc_conf->buffer_size, ctx)) != NGX_OK) {
if (rc == NGX_AGAIN) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to read image %s:%d",
__FUNCTION__,
__LINE__);
return ngx_http_filter_finalize_request(r,
&ngx_http_small_light_module,
NGX_HTTP_UNSUPPORTED_MEDIA_TYPE);
}
r->connection->buffered &= ~NGX_HTTP_SMALL_LIGHT_IMAGE_BUFFERED;
rc = ctx->converter.init(r, ctx);
if (rc != NGX_OK) {
ngx_pfree(r->pool, ctx->content_orig);
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to process image %s:%d",
__FUNCTION__,
__LINE__);
return ngx_http_filter_finalize_request(r,
&ngx_http_small_light_module,
NGX_HTTP_UNSUPPORTED_MEDIA_TYPE);
}
rc = ctx->converter.process(r, ctx);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to process image %s:%d",
__FUNCTION__,
__LINE__);
ctx->converter.term(ctx);
return ngx_http_filter_finalize_request(r,
&ngx_http_small_light_module,
NGX_HTTP_UNSUPPORTED_MEDIA_TYPE);
}
b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to allocate memory from r->pool %s:%d",
__FUNCTION__,
__LINE__);
ctx->converter.term(ctx);
return NGX_ERROR;
}
b->pos = ctx->content;
b->last = ctx->content + ctx->content_length;
b->memory = 1;
b->last_buf = 1;
out.buf = b;
out.next = NULL;
r->headers_out.content_length_n = b->last - b->pos;
if (r->headers_out.content_length) {
r->headers_out.content_length->hash = 0;
}
content_type_len = ngx_strlen(ctx->of);
r->headers_out.content_length = NULL;
r->headers_out.content_type_len = content_type_len;
r->headers_out.content_type.len = content_type_len;
r->headers_out.content_type.data = (u_char *)ctx->of;
r->headers_out.content_type_lowcase = NULL;
cln = ngx_pool_cleanup_add(r->pool, 0);
if (cln == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"failed to allocate memory from r->pool %s:%d",
__FUNCTION__,
__LINE__);
ctx->converter.term(ctx);
return NGX_ERROR;
}
cln->handler = ctx->converter.term;
cln->data = ctx;
return ngx_http_small_light_finish(r, &out);
}
static ngx_int_t ngx_http_small_light_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
{
ngx_http_small_light_conf_t *srv_conf;
ngx_http_small_light_conf_t *loc_conf;
ngx_http_small_light_ctx_t *ctx;
ngx_chain_t out;
ngx_int_t rc;
if (in == NULL) {
return ngx_http_next_body_filter(r, in);
}
srv_conf = ngx_http_get_module_srv_conf(r, ngx_http_small_light_module);
loc_conf = ngx_http_get_module_loc_conf(r, ngx_http_small_light_module);
if (!loc_conf->enable) {
return ngx_http_next_body_filter(r, in);
}
ctx = ngx_http_get_module_ctx(r, ngx_http_small_light_module);
if (ctx == NULL) {
return ngx_http_next_body_filter(r, in);
}
if (ctx->ictx == NULL) {
ctx->ictx = ngx_pcalloc(r->pool, sizeof(ngx_http_small_light_imagemagick_ctx_t));
if (ctx->ictx == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s:%d", __FUNCTION__, __LINE__);
return NGX_ERROR;
}
}
if((rc = ngx_http_small_light_image_read(r, in, ctx)) != NGX_OK) {
if (rc == NGX_AGAIN) {
return NGX_OK;
}
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s:%d", __FUNCTION__, __LINE__);
return NGX_ERROR;
}
r->connection->buffered &= ~NGX_HTTP_SMALL_LIGHT_IMAGE_BUFFERED;
ngx_http_small_light_imagemagick_init(ctx);
rc = ngx_http_small_light_imagemagick_process(r, ctx);
ngx_http_small_light_imagemagick_term(ctx);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s:%d", __FUNCTION__, __LINE__);
return NGX_ERROR;
}
ngx_buf_t *b = ngx_pcalloc(r->pool, sizeof(ngx_buf_t));
if (b == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s:%d", __FUNCTION__, __LINE__);
return NGX_ERROR;
}
b->pos = ctx->content;
b->last = ctx->content + ctx->content_length;
b->memory = 1;
b->last_buf = 1;
out.buf = b;
out.next = NULL;
r->headers_out.content_length_n = b->last - b->pos;
if (r->headers_out.content_length) {
r->headers_out.content_length->hash = 0;
}
r->headers_out.content_length = NULL;
ngx_pool_cleanup_t *cln;
cln = ngx_pool_cleanup_add(r->pool, 0);
if (cln == NULL) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "%s:%d", __FUNCTION__, __LINE__);
return NGX_ERROR;
}
cln->handler = ngx_http_small_light_cleanup;
cln->data = ctx;
return ngx_http_small_light_finish(r, &out);
}