sys/shell: add sha256sum command

RIOT-OS · May 17, 2022 · cc73e3f · cc73e3f
1 parent a250c2b
commit cc73e3f
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diff --git a/makefiles/pseudomodules.inc.mk b/makefiles/pseudomodules.inc.mk
@@ -198,6 +198,7 @@ PSEUDOMODULES += senml_cbor
 PSEUDOMODULES += senml_phydat
 PSEUDOMODULES += senml_saul
 PSEUDOMODULES += sha1sum
+PSEUDOMODULES += sha256sum
 PSEUDOMODULES += shell_hooks
 PSEUDOMODULES += slipdev_stdio
 PSEUDOMODULES += slipdev_l2addr

diff --git a/sys/shell/commands/sc_vfs.c b/sys/shell/commands/sc_vfs.c
@@ -699,4 +699,31 @@ int _vfs_sha1sum_cmd(int argc, char **argv)
     return 0;
 }
 #endif
+
+#if MODULE_SHA256SUM
+#include "hashes/sha256.h"
+int _vfs_sha256sum_cmd(int argc, char **argv)
+{
+    int res;
+    uint8_t digest[SHA256_DIGEST_LENGTH];
+
+    if (argc < 2) {
+        printf("usage: %s [file] …\n", argv[0]);
+        return -1;
+    }
+
+    for (int i = 1; i < argc; ++i) {
+        const char *file = argv[i];
+        res = vfs_file_sha256(file, digest,
+                              _shell_vfs_data_buffer, sizeof(_shell_vfs_data_buffer));
+        if (res < 0) {
+            printf("%s: error %d\n", file, res);
+        } else {
+            _print_digest(digest, sizeof(digest), file);
+        }
+    }
+
+    return 0;
+}
+#endif
 #endif
diff --git a/sys/shell/commands/shell_commands.c b/sys/shell/commands/shell_commands.c
@@ -223,6 +223,10 @@ extern int _vfs_md5sum_cmd(int argc, char **argv);
 extern int _vfs_sha1sum_cmd(int argc, char **argv);
 #endif
 
+#ifdef MODULE_SHA256SUM
+extern int _vfs_sha256sum_cmd(int argc, char **argv);
+#endif
+
 const shell_command_t _shell_command_list[] = {
     {"reboot", "Reboot the node", _reboot_handler},
     {"version", "Prints current RIOT_VERSION", _version_handler},
@@ -282,6 +286,9 @@ const shell_command_t _shell_command_list[] = {
 #ifdef MODULE_SHA1SUM
     {"sha1sum", "Compute and check SHA1 message digest", _vfs_sha1sum_cmd},
 #endif
+#ifdef MODULE_SHA256SUM
+    {"sha256sum", "Compute and check SHA256 message digest", _vfs_sha256sum_cmd},
+#endif
 #ifdef MODULE_GNRC_IPV6_NIB
     {"nib", "Configure neighbor information base", _gnrc_ipv6_nib},
 #endif