For #2424, use srandom/random to generate. 2.0.274

Author: winlinvip

README.md

@@ -340,6 +340,8 @@ Remark:
 
 ## History
 
+* <strong>v2.0, 2021-06-26, [2.0 release9(2.0.274)](https://github.com/ossrs/srs/releases/tag/v2.0-r10) released. 87575 lines.</strong>
+* v2.0, 2021-07-04, For [#2424](https://github.com/ossrs/srs/issues/2424), use srandom/random to generate. 2.0.274
 * <strong>v2.0, 2021-06-26, [2.0 release9(2.0.273)](https://github.com/ossrs/srs/releases/tag/v2.0-r9) released. 87552 lines.</strong>
 * v2.0, 2021-06-25, For [#2424](https://github.com/ossrs/srs/issues/2424), query the latest available version. 2.0.273
 * <strong>v2.0, 2020-01-25, [2.0 release8(2.0.272)][r2.0r8] released. 87292 lines.</strong>

trunk/src/app/srs_app_ingest.cpp

@@ -35,6 +35,7 @@ using namespace std;
 #include <srs_app_pithy_print.hpp>
 #include <srs_kernel_utility.hpp>
 #include <srs_app_utility.hpp>
+#include <srs_rtmp_utility.hpp>
 
 // when error, ingester sleep for a while and retry.
 // ingest never sleep a long time, for we must start the stream ASAP.
@@ -436,7 +437,7 @@ void SrsIngester::show_ingest_log_message()
     }
 
     // random choose one ingester to report.
-    int index = rand() % (int)ingesters.size();
+    int index = srs_random() % (int)ingesters.size();
     SrsIngesterFFMPEG* ingester = ingesters.at(index);
 
     // reportable

trunk/src/app/srs_app_latest_version.cpp

@@ -54,7 +54,7 @@ int SrsLatestVersion::start()
         return ERROR_SUCCESS;
     }
 
-    char buf[10];
+    char buf[16];
     srs_random_generate(buf, sizeof(buf));
     for (int i = 0; i < (int)sizeof(buf); i++) {
         buf[i] = 'a' + uint8_t(buf[i])%25;

trunk/src/core/srs_core.hpp

@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    273
+#define VERSION_REVISION    274
 
 // generated by configure, only macros.
 #include <srs_auto_headers.hpp>

trunk/src/kernel/srs_kernel_utility.cpp

@@ -110,9 +110,17 @@ int64_t srs_get_system_startup_time_ms()
     if (_srs_system_time_startup_time <= 0) {
         srs_update_system_time_ms();
     }
-    
+
     return _srs_system_time_startup_time / 1000;
 }
+int64_t srs_get_system_startup_time_us()
+{
+    if (_srs_system_time_startup_time <= 0) {
+        srs_update_system_time_ms();
+    }
+
+    return _srs_system_time_startup_time;
+}
 int64_t srs_update_system_time_ms()
 {
     timeval now;

trunk/src/kernel/srs_kernel_utility.hpp

@@ -46,6 +46,7 @@ extern int srs_avc_nalu_read_bit(SrsBitStream* stream, int8_t& v);
 // get current system time in ms, use cache to avoid performance problem
 extern int64_t srs_get_system_time_ms();
 extern int64_t srs_get_system_startup_time_ms();
+extern int64_t srs_get_system_startup_time_us();
 // the deamon st-thread will update it.
 extern int64_t srs_update_system_time_ms();
 

trunk/src/protocol/srs_rtmp_handshake.cpp

@@ -484,7 +484,7 @@ namespace _srs_internal
 
     key_block::key_block()
     {
-        offset = (int32_t)rand();
+        offset = (int32_t)srs_random();
         random0 = NULL;
         random1 = NULL;
 
@@ -566,7 +566,7 @@ namespace _srs_internal
 
     digest_block::digest_block()
     {
-        offset = (int32_t)rand();
+        offset = (int32_t)srs_random();
         random0 = NULL;
         random1 = NULL;
 

trunk/src/protocol/srs_rtmp_utility.cpp

@@ -115,18 +115,24 @@ void srs_vhost_resolve(string& vhost, string& app, string& param)
 }
 
 void srs_random_generate(char* bytes, int size)
+{
+    for (int i = 0; i < size; i++) {
+        // the common value in [0x0f, 0xf0]
+        bytes[i] = 0x0f + (srs_random() % (256 - 0x0f - 0x0f));
+    }
+}
+
+long srs_random()
 {
     static bool _random_initialized = false;
     if (!_random_initialized) {
-        srand(0);
         _random_initialized = true;
-        srs_trace("srand initialized the random.");
-    }
-    
-    for (int i = 0; i < size; i++) {
-        // the common value in [0x0f, 0xf0]
-        bytes[i] = 0x0f + (rand() % (256 - 0x0f - 0x0f));
+
+        srandom((unsigned int)srs_get_system_startup_time_us());
+        srs_trace("srandom initialized the random.");
     }
+
+    return random();
 }
 
 string srs_generate_tc_url(string ip, string vhost, string app, string port, string param)

trunk/src/protocol/srs_rtmp_utility.hpp

@@ -80,6 +80,8 @@ extern void srs_vhost_resolve(
 * generate ramdom data for handshake.
 */
 extern void srs_random_generate(char* bytes, int size);
+// Generate random value, use srandom(now_us) to init seed if not initialized.
+extern long srs_random();
 
 /**
 * generate the tcUrl.