Accept port range

Accept a range of ports to listen to, so that it does not fail if
another instance of scrcpy is currently starting.

The range can be passed via the command line:

    scrcpy -p 27183:27186
    scrcpy -p 27183  # implicitly 27183:27183, as before

The default is 27183:27199.

Closes #951 <https://github.com/Genymobile/scrcpy/issues/951>

app/src/command.c

@@ -55,32 +55,6 @@ argv_to_string(const char *const *argv, char *buf, size_t bufsize) {
     return idx;
 }
 
-static void
-show_adb_installation_msg() {
-#ifndef __WINDOWS__
-    static const struct {
-        const char *binary;
-        const char *command;
-    } pkg_managers[] = {
-        {"apt", "apt install adb"},
-        {"apt-get", "apt-get install adb"},
-        {"brew", "brew cask install android-platform-tools"},
-        {"dnf", "dnf install android-tools"},
-        {"emerge", "emerge dev-util/android-tools"},
-        {"pacman", "pacman -S android-tools"},
-    };
-    for (size_t i = 0; i < ARRAY_LEN(pkg_managers); ++i) {
-        if (cmd_search(pkg_managers[i].binary)) {
-            LOGI("You may install 'adb' by \"%s\"", pkg_managers[i].command);
-            return;
-        }
-    }
-#endif
-
-    LOGI("You may download and install 'adb' from "
-         "https://developer.android.com/studio/releases/platform-tools");
-}
-
 static void
 show_adb_err_msg(enum process_result err, const char *const argv[]) {
     char buf[512];
@@ -94,7 +68,6 @@ show_adb_err_msg(enum process_result err, const char *const argv[]) {
             LOGE("Command not found: %s", buf);
             LOGE("(make 'adb' accessible from your PATH or define its full"
                  "path in the ADB environment variable)");
-            show_adb_installation_msg();
             break;
         case PROCESS_SUCCESS:
             // do nothing

app/src/command.h

@@ -43,11 +43,6 @@ enum process_result {
     PROCESS_ERROR_MISSING_BINARY,
 };
 
-#ifndef __WINDOWS__
-bool
-cmd_search(const char *file);
-#endif
-
 enum process_result
 cmd_execute(const char *const argv[], process_t *process);
 

app/src/sys/unix/command.c

@@ -14,7 +14,6 @@
 #include <limits.h>
 #include <signal.h>
 #include <stdlib.h>
-#include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/wait.h>
@@ -22,42 +21,6 @@
 
 #include "util/log.h"
 
-bool
-cmd_search(const char *file) {
-    char *path = getenv("PATH");
-    if (!path)
-        return false;
-    path = strdup(path);
-    if (!path)
-        return false;
-
-    bool ret = false;
-    size_t file_len = strlen(file);
-    char *saveptr;
-    for (char *dir = strtok_r(path, ":", &saveptr); dir;
-            dir = strtok_r(NULL, ":", &saveptr)) {
-        size_t dir_len = strlen(dir);
-        char *fullpath = malloc(dir_len + file_len + 2);
-        if (!fullpath)
-            continue;
-        memcpy(fullpath, dir, dir_len);
-        fullpath[dir_len] = '/';
-        memcpy(fullpath + dir_len + 1, file, file_len + 1);
-
-        struct stat sb;
-        bool fullpath_executable = stat(fullpath, &sb) == 0 &&
-            sb.st_mode & S_IXUSR;
-        free(fullpath);
-        if (fullpath_executable) {
-            ret = true;
-            break;
-        }
-    }
-
-    free(path);
-    return ret;
-}
-
 enum process_result
 cmd_execute(const char *const argv[], pid_t *pid) {
     int fd[2];

app/src/sys/win/command.c

@@ -1,11 +1,11 @@
 #include "command.h"
 
-#include <sys/stat.h>
-
 #include "config.h"
 #include "util/log.h"
 #include "util/str_util.h"
 
+#include <sys/stat.h>
+
 static int
 build_cmd(char *cmd, size_t len, const char *const argv[]) {
     // Windows command-line parsing is WTF:

server/src/main/java/com/genymobile/scrcpy/Workarounds.java

@@ -73,7 +73,7 @@ public final class Workarounds {
             mInitialApplicationField.set(activityThread, app);
         } catch (Throwable throwable) {
             // this is a workaround, so failing is not an error
-            Ln.d("Could not fill app info: " + throwable.getMessage());
+            Ln.w("Could not fill app info: " + throwable.getMessage());
         }
     }
 }