[misc] fix a potential crash bug, remove unused codes and update version.

Author: winshining

ngx_rtmp_gop_cache_module.c

@@ -267,7 +267,6 @@ static ngx_int_t
 ngx_rtmp_gop_cache_alloc_cache(ngx_rtmp_session_t *s)
 {
     ngx_rtmp_codec_ctx_t           *codec_ctx;
-    ngx_rtmp_core_srv_conf_t       *cscf;
     ngx_rtmp_gop_cache_ctx_t       *ctx;
     ngx_rtmp_gop_cache_t           *cache, **iter;
 
@@ -281,11 +280,6 @@ ngx_rtmp_gop_cache_alloc_cache(ngx_rtmp_session_t *s)
         return NGX_ERROR;
     }
 
-    cscf = ngx_rtmp_get_module_srv_conf(s, ngx_rtmp_core_module);
-    if (cscf == NULL) {
-        return NGX_ERROR;
-    }
-
     if (ctx->free_cache) {
         cache = ctx->free_cache;
         ctx->free_cache = cache->next;
@@ -378,19 +372,18 @@ ngx_rtmp_gop_cache_cleanup(ngx_rtmp_session_t *s)
         ngx_rtmp_gop_cache_free_cache(s, cache);
     }
 
-    if (ctx->pool) {
-        ngx_destroy_pool(ctx->pool);
-        ctx->pool = NULL;
-    }
-
     ctx->video_seq_header = NULL;
     ctx->audio_seq_header = NULL;
     ctx->meta = NULL;
 
-    ctx->cache_tail = ctx->cache_head = NULL;
+    if (ctx->cache_head) {
+        ctx->cache_head->next = ctx->free_cache;
+        ctx->free_cache = ctx->cache_head;
+        ctx->cache_head = NULL;
+    }
+
+    ctx->cache_tail = NULL;
     ctx->gop_cache_count = 0;
-    ctx->free_cache = NULL;
-    ctx->free_frame = NULL;
     ctx->video_frame_in_all = 0;
     ctx->audio_frame_in_all = 0;
 }
@@ -720,10 +713,10 @@ ngx_rtmp_gop_cache_av(ngx_rtmp_session_t *s, ngx_rtmp_header_t *h,
     ngx_rtmp_live_ctx_t            *ctx;
     ngx_rtmp_gop_cache_app_conf_t  *gacf;
     ngx_rtmp_live_app_conf_t       *lacf;
+    ngx_rtmp_live_chunk_stream_t   *cs;
     ngx_rtmp_header_t               ch;
     ngx_uint_t                      prio;
     ngx_uint_t                      csidx;
-    ngx_rtmp_live_chunk_stream_t   *cs;
 
     gacf = ngx_rtmp_get_module_app_conf(s, ngx_rtmp_gop_cache_module);
     if (gacf == NULL || !gacf->gop_cache) {
@@ -851,6 +844,7 @@ ngx_rtmp_gop_cache_close_stream(ngx_rtmp_session_t *s,
     ngx_rtmp_close_stream_t *v)
 {
     ngx_rtmp_live_ctx_t            *ctx;
+    ngx_rtmp_gop_cache_ctx_t       *gctx;
     ngx_rtmp_live_app_conf_t       *lacf;
     ngx_rtmp_gop_cache_app_conf_t  *gacf;
 
@@ -873,6 +867,16 @@ ngx_rtmp_gop_cache_close_stream(ngx_rtmp_session_t *s,
         goto next;
     }
 
+    gctx = ngx_rtmp_get_module_ctx(s, ngx_rtmp_gop_cache_module);
+    if (gctx == NULL) {
+        goto next;
+    }
+
+    if (gctx->pool) {
+        ngx_destroy_pool(gctx->pool);
+        gctx->pool = NULL;
+    }
+
     ngx_rtmp_gop_cache_cleanup(s);
 
 next:

ngx_rtmp_version.h

@@ -9,8 +9,8 @@
 #define _NGX_RTMP_VERSION_H_INCLUDED_
 
 
-#define nginx_rtmp_version  1002004
-#define NGINX_RTMP_VERSION  "1.2.4"
+#define nginx_rtmp_version  1002005
+#define NGINX_RTMP_VERSION  "1.2.5"
 
 
 #endif /* _NGX_RTMP_VERSION_H_INCLUDED_ */