Add the files

3 files changed, 130 insertions, 0 deletions

diff --git a/src/modules/shell/option.h b/src/modules/shell/option.h
new file mode 100644
index 0000000..bd8ed24
--- /dev/null
+++ b/src/modules/shell/option.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#include "common/option.h"
+
+typedef struct FFShellOptions {
+    FFModuleArgs moduleArgs;
+} FFShellOptions;
+
+static_assert(sizeof(FFShellOptions) <= FF_OPTION_MAX_SIZE, "FFShellOptions size exceeds maximum allowed size");
diff --git a/src/modules/shell/shell.c b/src/modules/shell/shell.c
new file mode 100644
index 0000000..f18c1bf
--- /dev/null
+++ b/src/modules/shell/shell.c
@@ -0,0 +1,110 @@
+#include "common/printing.h"
+#include "common/jsonconfig.h"
+#include "common/strutil.h"
+#include "detection/terminalshell/terminalshell.h"
+#include "modules/shell/shell.h"
+
+bool ffPrintShell(FFShellOptions* options) {
+    const FFShellResult* result = ffDetectShell();
+
+    if (result->processName.length == 0) {
+        ffPrintError(FF_SHELL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Couldn't detect shell");
+        return false;
+    }
+
+    if (options->moduleArgs.outputFormat.length == 0) {
+        ffPrintLogoAndKey(FF_SHELL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT);
+        ffStrbufWriteTo(&result->prettyName, stdout);
+
+        if (result->version.length > 0) {
+            putchar(' ');
+            ffStrbufWriteTo(&result->version, stdout);
+        }
+
+        putchar('\n');
+    } else {
+        FF_PRINT_FORMAT_CHECKED(FF_SHELL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, ((FFformatarg[]) {
+                                                                                                          FF_ARG(result->processName, "process-name"),
+                                                                                                          FF_ARG(result->exe, "exe"),
+                                                                                                          FF_ARG(result->exeName, "exe-name"),
+                                                                                                          FF_ARG(result->version, "version"),
+                                                                                                          FF_ARG(result->pid, "pid"),
+                                                                                                          FF_ARG(result->prettyName, "pretty-name"),
+                                                                                                          FF_ARG(result->exePath, "exe-path"),
+                                                                                                          FF_ARG(result->tty, "tty"),
+                                                                                                      }));
+    }
+
+    return true;
+}
+
+void ffParseShellJsonObject(FFShellOptions* options, yyjson_val* module) {
+    yyjson_val *key, *val;
+    size_t idx, max;
+    yyjson_obj_foreach (module, idx, max, key, val) {
+        if (ffJsonConfigParseModuleArgs(key, val, &options->moduleArgs)) {
+            continue;
+        }
+
+        ffPrintError(FF_SHELL_MODULE_NAME, 0, &options->moduleArgs, FF_PRINT_TYPE_DEFAULT, "Unknown JSON key %s", unsafe_yyjson_get_str(key));
+    }
+}
+
+void ffGenerateShellJsonConfig(FFShellOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
+    ffJsonConfigGenerateModuleArgsConfig(doc, module, &options->moduleArgs);
+}
+
+bool ffGenerateShellJsonResult(FF_A_UNUSED FFShellOptions* options, yyjson_mut_doc* doc, yyjson_mut_val* module) {
+    const FFShellResult* result = ffDetectShell();
+
+    if (result->processName.length == 0) {
+        yyjson_mut_obj_add_str(doc, module, "error", "Couldn't detect shell");
+        return false;
+    }
+
+    yyjson_mut_val* obj = yyjson_mut_obj_add_obj(doc, module, "result");
+    yyjson_mut_obj_add_strbuf(doc, obj, "exe", &result->exe);
+    yyjson_mut_obj_add_strcpy(doc, obj, "exeName", result->exeName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "exePath", &result->exePath);
+    yyjson_mut_obj_add_uint(doc, obj, "pid", result->pid);
+    yyjson_mut_obj_add_uint(doc, obj, "ppid", result->ppid);
+    yyjson_mut_obj_add_strbuf(doc, obj, "processName", &result->processName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "prettyName", &result->prettyName);
+    yyjson_mut_obj_add_strbuf(doc, obj, "version", &result->version);
+    if (result->tty >= 0) {
+        yyjson_mut_obj_add_int(doc, obj, "tty", result->tty);
+    } else {
+        yyjson_mut_obj_add_null(doc, obj, "tty");
+    }
+
+    return true;
+}
+
+void ffInitShellOptions(FFShellOptions* options) {
+    ffOptionInitModuleArg(&options->moduleArgs, "");
+}
+
+void ffDestroyShellOptions(FFShellOptions* options) {
+    ffOptionDestroyModuleArg(&options->moduleArgs);
+}
+
+FFModuleBaseInfo ffShellModuleInfo = {
+    .name = FF_SHELL_MODULE_NAME,
+    .description = "Print the current shell name and version",
+    .initOptions = (void*) ffInitShellOptions,
+    .destroyOptions = (void*) ffDestroyShellOptions,
+    .parseJsonObject = (void*) ffParseShellJsonObject,
+    .printModule = (void*) ffPrintShell,
+    .generateJsonResult = (void*) ffGenerateShellJsonResult,
+    .generateJsonConfig = (void*) ffGenerateShellJsonConfig,
+    .formatArgs = FF_FORMAT_ARG_LIST(((FFModuleFormatArg[]) {
+        { "Shell process name", "process-name" },
+        { "The first argument of the command line when running the shell", "exe" },
+        { "Shell base name of arg0", "exe-name" },
+        { "Shell version", "version" },
+        { "Shell pid", "pid" },
+        { "Shell pretty name", "pretty-name" },
+        { "Shell full exe path", "exe-path" },
+        { "Shell tty used", "tty" },
+    }))
+};
diff --git a/src/modules/shell/shell.h b/src/modules/shell/shell.h
new file mode 100644
index 0000000..50a094c
--- /dev/null
+++ b/src/modules/shell/shell.h
@@ -0,0 +1,11 @@
+#pragma once
+
+#include "option.h"
+
+#define FF_SHELL_MODULE_NAME "Shell"
+
+bool ffPrintShell(FFShellOptions* options);
+void ffInitShellOptions(FFShellOptions* options);
+void ffDestroyShellOptions(FFShellOptions* options);
+
+extern FFModuleBaseInfo ffShellModuleInfo;