From b73fdff00d88cff8cd5d5c781a5073eb50a7d78c Mon Sep 17 00:00:00 2001
From: Alex Tereschenko <alext.mkrs@gmail.com>
Date: Wed, 17 May 2017 19:45:05 +0200
Subject: [PATCH] examples: be more defensive and replace strcmp() with
 strncmp()

Signed-off-by: Alex Tereschenko <alext.mkrs@gmail.com>
---
 examples/mraa-i2c.c | 17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/examples/mraa-i2c.c b/examples/mraa-i2c.c
index 2a5b602..dc675c4 100644
--- a/examples/mraa-i2c.c
+++ b/examples/mraa-i2c.c
@@ -166,16 +166,16 @@ int
 process_command(int argc, char** argv)
 {
     int status = 0;
-    if (strcmp(argv[1], "help") == 0) {
+    if (strncmp(argv[1], "help", strlen("help") + 1) == 0) {
         print_help();
         return 0;
-    } else if (strcmp(argv[1], "version") == 0) {
+    } else if (strncmp(argv[1], "version", strlen("version") + 1) == 0) {
         print_version();
         return 0;
-    } else if (strcmp(argv[1], "list") == 0) {
+    } else if (strncmp(argv[1], "list", strlen("list") + 1) == 0) {
         print_busses();
         return 0;
-    } else if (strcmp(argv[1], "detect") == 0) {
+    } else if (strncmp(argv[1], "detect", strlen("detect") + 1) == 0) {
         if (argc == 3) {
             int bus = strtol(argv[2], NULL, 0);
             i2c_detect_devices(bus);
@@ -184,10 +184,11 @@ process_command(int argc, char** argv)
             print_command_error();
             return 1;
         }
-    } else if ((strcmp(argv[1], "get") == 0) || (strcmp(argv[1], "getrpt") == 0)) {
+    } else if ((strncmp(argv[1], "get", strlen("get") + 1) == 0) ||
+               (strncmp(argv[1], "getrpt", strlen("getrpt") + 1) == 0)) {
         if (argc == 5) {
             int interation = 0;
-            mraa_boolean_t should_repeat = strcmp(argv[1], "getrpt") == 0;
+            mraa_boolean_t should_repeat = strncmp(argv[1], "getrpt", strlen("getrpt") + 1) == 0;
             int bus = strtol(argv[2], NULL, 0);
             uint8_t device_address = strtol(argv[3], NULL, 0);
             uint8_t register_address = strtol(argv[4], NULL, 0);
@@ -211,7 +212,7 @@ process_command(int argc, char** argv)
             status = 1;
         }
         return status;
-    } else if ((strcmp(argv[1], "set") == 0)) {
+    } else if ((strncmp(argv[1], "set", strlen("set") + 1) == 0)) {
         if (argc == 6) {
             int bus = strtol(argv[2], NULL, 0);
             uint8_t device_address = strtol(argv[3], NULL, 0);
@@ -246,7 +247,7 @@ run_interactive_mode()
         fprintf(stdout, "Command: ");
         fgets(command, 80, stdin);
         command[strlen(command) - 1] = 0;
-        if (strcmp(command, "q") == 0)
+        if (strncmp(command, "q", strlen("q") + 1) == 0)
             return;
         char* str = strtok(command, " ");
         int len = 0;