[PATCH v3 07/22] app/flow-perf: replace strtok with reentrant version

[Jie Hai <haijie1@huawei.com>]

Multiple threads calling the same function may cause condition
race issues, which often leads to abnormal behavior and can cause
more serious vulnerabilities such as abnormal termination, denial
of service, and compromised data integrity.

The strtok() is non-reentrant, it is better to replace it with a
reentrant version.

Fixes: 0c8f1f4ab90e ("app/flow-perf: support raw encap/decap actions")
Fixes: 7f37f0936a19 ("app/flow-perf: support meter policy API")
Fixes: 80a323319745 ("app/flow-perf: add destination ports parameter")
Cc: stable@dpdk.org

Signed-off-by: Jie Hai <haijie1@huawei.com>
Acked-by: Chengwen Feng <fengchengwen@huawei.com>
---
 app/test-flow-perf/main.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/app/test-flow-perf/main.c b/app/test-flow-perf/main.c
index e224ef67983d..36e7c1d72019 100644
--- a/app/test-flow-perf/main.c
+++ b/app/test-flow-perf/main.c
@@ -602,6 +602,7 @@ read_meter_policy(char *prog, char *arg)
 {
 	char *token;
 	size_t i, j, k;
+	char *sp = NULL;
 
 	j = 0;
 	k = 0;
@@ -612,9 +613,9 @@ read_meter_policy(char *prog, char *arg)
 		token = strsep(&arg, ":\0");
 	}
 	j = 0;
-	token = strtok(actions_str[0], ",\0");
+	token = strtok_r(actions_str[0], ",\0", &sp);
 	while (token == NULL && j < RTE_COLORS - 1)
-		token = strtok(actions_str[++j], ",\0");
+		token = strtok_r(actions_str[++j], ",\0", &sp);
 	while (j < RTE_COLORS && token != NULL) {
 		for (i = 0; i < RTE_DIM(flow_options); i++) {
 			if (!strcmp(token, flow_options[i].str)) {
@@ -628,9 +629,9 @@ read_meter_policy(char *prog, char *arg)
 			usage(prog);
 			rte_exit(EXIT_SUCCESS, "Invalid colored actions\n");
 		}
-		token = strtok(NULL, ",\0");
+		token = strtok_r(NULL, ",\0", &sp);
 		while (!token && j < RTE_COLORS - 1) {
-			token = strtok(actions_str[++j], ",\0");
+			token = strtok_r(actions_str[++j], ",\0", &sp);
 			k = 0;
 		}
 	}
@@ -641,6 +642,7 @@ args_parse(int argc, char **argv)
 {
 	uint64_t pm, seed;
 	uint64_t hp_conf;
+	char *sp = NULL;
 	char **argvopt;
 	uint32_t prio;
 	char *token;
@@ -804,7 +806,7 @@ args_parse(int argc, char **argv)
 						RTE_FLOW_ACTION_TYPE_RAW_ENCAP
 					);
 
-				token = strtok(optarg, ",");
+				token = strtok_r(optarg, ",", &sp);
 				while (token != NULL) {
 					for (i = 0; i < RTE_DIM(flow_options); i++) {
 						if (strcmp(flow_options[i].str, token) == 0) {
@@ -817,7 +819,7 @@ args_parse(int argc, char **argv)
 							rte_exit(EXIT_FAILURE,
 								"Invalid encap item: %s\n", token);
 					}
-					token = strtok(NULL, ",");
+					token = strtok_r(NULL, ",", &sp);
 				}
 				printf(" / ");
 			}
@@ -828,7 +830,7 @@ args_parse(int argc, char **argv)
 						RTE_FLOW_ACTION_TYPE_RAW_DECAP
 					);
 
-				token = strtok(optarg, ",");
+				token = strtok_r(optarg, ",", &sp);
 				while (token != NULL) {
 					for (i = 0; i < RTE_DIM(flow_options); i++) {
 						if (strcmp(flow_options[i].str, token) == 0) {
@@ -841,7 +843,7 @@ args_parse(int argc, char **argv)
 							rte_exit(EXIT_FAILURE,
 								"Invalid decap item %s\n", token);
 					}
-					token = strtok(NULL, ",");
+					token = strtok_r(NULL, ",", &sp);
 				}
 				printf(" / ");
 			}
@@ -910,10 +912,10 @@ args_parse(int argc, char **argv)
 				uint16_t port_idx = 0;
 				char *token;
 
-				token = strtok(optarg, ",");
+				token = strtok_r(optarg, ",", &sp);
 				while (token != NULL) {
 					dst_ports[port_idx++] = atoi(token);
-					token = strtok(NULL, ",");
+					token = strtok_r(NULL, ",", &sp);
 				}
 			}
 			if (strcmp(lgopts[opt_idx].name, "rxq") == 0) {
-- 
2.30.0