From ffd9f0868b6158a291ad74881e5b2fb197776bee Mon Sep 17 00:00:00 2001
From: Wirtos_new <Wirtos.new@gmail.com>
Date: Sat, 19 Jun 2021 17:55:56 +0300
Subject: [PATCH] use dynamic buffer for argv

---
 app/src/adb.c             | 11 ++++++++---
 app/src/sys/win/process.c | 35 +++++++++++++++++++++++++----------
 2 files changed, 33 insertions(+), 13 deletions(-)

diff --git a/app/src/adb.c b/app/src/adb.c
index be973c41..ff52685c 100644
--- a/app/src/adb.c
+++ b/app/src/adb.c
@@ -81,14 +81,18 @@ show_adb_installation_msg() {
 
 static void
 show_adb_err_msg(enum process_result err, const char *const argv[]) {
-    char buf[512];
+    size_t n_args, len;
+    char *buf = NULL;
+    len = xargvlen(argv, &n_args) + (n_args * 3 - 1) + 1;
+    /* buffer large enough to store argv_to_string repr + nul terminator */
+    buf = malloc(len);
     switch (err) {
         case PROCESS_ERROR_GENERIC:
-            argv_to_string(argv, buf, sizeof(buf));
+            argv_to_string(argv, buf, len);
             LOGE("Failed to execute: %s", buf);
             break;
         case PROCESS_ERROR_MISSING_BINARY:
-            argv_to_string(argv, buf, sizeof(buf));
+            argv_to_string(argv, buf, len);
             LOGE("Command not found: %s", buf);
             LOGE("(make 'adb' accessible from your PATH or define its full"
                  "path in the ADB environment variable)");
@@ -98,6 +102,7 @@ show_adb_err_msg(enum process_result err, const char *const argv[]) {
             // do nothing
             break;
     }
+    free(buf);
 }
 
 process_t
diff --git a/app/src/sys/win/process.c b/app/src/sys/win/process.c
index f170e40d..825813e5 100644
--- a/app/src/sys/win/process.c
+++ b/app/src/sys/win/process.c
@@ -6,6 +6,11 @@
 #include "util/log.h"
 #include "util/str_util.h"
 
+#if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
+    #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
+#endif
+
+
 static int
 build_cmd(char *cmd, size_t len, const char *const argv[]) {
     // Windows command-line parsing is WTF:
@@ -24,34 +29,44 @@ enum process_result
 process_execute(const char *const argv[], HANDLE *handle) {
     STARTUPINFOW si;
     PROCESS_INFORMATION pi;
+    wchar_t *wide = NULL;
+    char *cmd = NULL;
+    enum process_result res = PROCESS_SUCCESS;
+    size_t len = xargvlen(argv, NULL) + 1;
     memset(&si, 0, sizeof(si));
     si.cb = sizeof(si);
 
-    char cmd[256];
-    if (build_cmd(cmd, sizeof(cmd), argv)) {
+    cmd = malloc(len);
+    if (cmd == NULL || build_cmd(cmd, len, argv) != 0) {
         *handle = NULL;
-        return PROCESS_ERROR_GENERIC;
+        res = PROCESS_ERROR_GENERIC;
+        goto end;
     }
 
-    wchar_t *wide = utf8_to_wide_char(cmd);
+    wide = utf8_to_wide_char(cmd);
     if (!wide) {
         LOGC("Could not allocate wide char string");
-        return PROCESS_ERROR_GENERIC;
+        res = PROCESS_ERROR_GENERIC;
+        goto end;
     }
 
     if (!CreateProcessW(NULL, wide, NULL, NULL, FALSE, 0, NULL, NULL, &si,
                         &pi)) {
-        free(wide);
         *handle = NULL;
         if (GetLastError() == ERROR_FILE_NOT_FOUND) {
-            return PROCESS_ERROR_MISSING_BINARY;
+            res = PROCESS_ERROR_MISSING_BINARY;
+        } else {
+            res = PROCESS_ERROR_GENERIC;
         }
-        return PROCESS_ERROR_GENERIC;
+        goto end;
     }
 
-    free(wide);
     *handle = pi.hProcess;
-    return PROCESS_SUCCESS;
+
+    end:
+    free(wide);
+    free(cmd);
+    return res;
 }
 
 bool