From eb6394c3d83a21a8825e47b40659cfe0ead33b6f Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Mon, 15 Apr 2024 03:33:37 +0200
Subject: [PATCH] Support POSIX basename() from musl libc (#123)

Musl libc 1.2.5 removed the definition of the basename() function from
string.h and only provides it in libgen.h as the POSIX standard
defines it.

This change fixes compilation with musl libc 1.2.5.
````
build_dir/target-mips_24kc_musl/rtty-mbedtls/rtty-8.1.1/src/file.c:156:24: error: implicit declaration of function 'basename' [-Werror=implicit-function-declaration]
  156 |     const char *name = basename(path);
      |                        ^~~~~~~~
````

basename() modifies the input string, copy it first with strdup(), If
strdup() returns NULL the code will handle it.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 src/file.c    | 8 +++++++-
 src/filectl.c | 6 +++++-
 2 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/file.c b/src/file.c
index a104182..11d9abf 100644
--- a/src/file.c
+++ b/src/file.c
@@ -29,6 +29,7 @@
 #include <unistd.h>
 #include <mntent.h>
 #include <inttypes.h>
+#include <libgen.h>
 #include <sys/statvfs.h>
 #include <linux/limits.h>
 #include <sys/sysinfo.h>
@@ -153,13 +154,17 @@ static int start_upload_file(struct file_context *ctx, const char *path)
 {
     struct tty *tty = container_of(ctx, struct tty, file);
     struct rtty *rtty = tty->rtty;
-    const char *name = basename(path);
+    const char *name;
     struct stat st;
     int fd;
+    char *dirc;
 
+    dirc = strdup(path);
+    name = basename(dirc);
     fd = open(path, O_RDONLY);
     if (fd < 0) {
         log_err("open '%s' fail: %s\n", path, strerror(errno));
+        free(dirc);
         return -1;
     }
 
@@ -177,6 +182,7 @@ static int start_upload_file(struct file_context *ctx, const char *path)
     ctx->remain_size = st.st_size;
 
     log_info("upload file: %s, size: %" PRIu64 "\n", path, (uint64_t)st.st_size);
+    free(dirc);
 
     return 0;
 }
diff --git a/src/filectl.c b/src/filectl.c
index aed6099..c2c0a43 100644
--- a/src/filectl.c
+++ b/src/filectl.c
@@ -30,6 +30,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <fcntl.h>
+#include <libgen.h>
 
 #include "utils.h"
 #include "file.h"
@@ -75,6 +76,7 @@ static void handle_file_control_msg(int fd, int sfd, const char *path)
 {
     struct file_control_msg msg;
     struct buffer b = {};
+    char *dirc;
 
     while (true) {
         if (buffer_put_fd(&b, fd, -1, NULL) < 0)
@@ -90,7 +92,9 @@ static void handle_file_control_msg(int fd, int sfd, const char *path)
             if (sfd > -1) {
                 close(sfd);
                 gettimeofday(&start_time, NULL);
-                printf("Transferring '%s'...Press Ctrl+C to cancel\n", basename(path));
+                dirc = strdup(path);
+                printf("Transferring '%s'...Press Ctrl+C to cancel\n", basename(dirc));
+                free(dirc);
 
                 if (total_size == 0) {
                     printf("  100%%    0 B     0s\n");