X-Git-Url: https://sigrok.org/gitweb/?a=blobdiff_plain;f=backend.c;h=ca1460f8e29e1ac0a7878c2753e4184097020206;hb=e52e712d05419e4387704262a07e00904b2acbed;hp=4823044efce580dbc9d7a116f1eb46e63a84a389;hpb=545f9786390a89b8bb6868907afa555fc0a6ece4;p=libsigrok.git

diff --git a/backend.c b/backend.c
index 4823044e..ca1460f8 100644
--- a/backend.c
+++ b/backend.c
@@ -1,5 +1,5 @@
 /*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrok project.
  *
  * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
  * Copyright (C) 2012 Peter Stuge <peter@stuge.se>
@@ -114,6 +114,198 @@
  * @{
  */
 
+/**
+ * Sanity-check all libsigrok drivers.
+ *
+ * @return SR_OK if all drivers are OK, SR_ERR if one or more have issues.
+ */
+static int sanity_check_all_drivers(void)
+{
+	int i, errors, ret = SR_OK;
+	struct sr_dev_driver **drivers;
+	const char *d;
+
+	sr_spew("Sanity-checking all drivers.");
+
+	drivers = sr_driver_list();
+	for (i = 0; drivers[i]; i++) {
+		errors = 0;
+
+		d = (drivers[i]->name) ? drivers[i]->name : "NULL";
+
+		if (!drivers[i]->name) {
+			sr_err("No name in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->longname) {
+			sr_err("No longname in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (drivers[i]->api_version < 1) {
+			sr_err("API version in driver %d ('%s') < 1.", i, d);
+			errors++;
+		}
+		if (!drivers[i]->init) {
+			sr_err("No init in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->cleanup) {
+			sr_err("No cleanup in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->scan) {
+			sr_err("No scan in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->dev_list) {
+			sr_err("No dev_list in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->dev_clear) {
+			sr_err("No dev_clear in driver %d ('%s').", i, d);
+			errors++;
+		}
+		/* Note: config_get() is optional. */
+		if (!drivers[i]->config_set) {
+			sr_err("No config_set in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->config_list) {
+			sr_err("No config_list in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->dev_open) {
+			sr_err("No dev_open in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->dev_close) {
+			sr_err("No dev_close in driver %d ('%s').", i, d);
+			errors++;
+		}
+		if (!drivers[i]->dev_acquisition_start) {
+			sr_err("No dev_acquisition_start in driver %d ('%s').",
+			       i, d);
+			errors++;
+		}
+		if (!drivers[i]->dev_acquisition_stop) {
+			sr_err("No dev_acquisition_stop in driver %d ('%s').",
+			       i, d);
+			errors++;
+		}
+
+		/* Note: 'priv' is allowed to be NULL. */
+
+		if (errors == 0)
+			continue;
+
+		ret = SR_ERR;
+	}
+
+	return ret;
+}
+
+/**
+ * Sanity-check all libsigrok input modules.
+ *
+ * @return SR_OK if all modules are OK, SR_ERR if one or more have issues.
+ */
+static int sanity_check_all_input_modules(void)
+{
+	int i, errors, ret = SR_OK;
+	struct sr_input_format **inputs;
+	const char *d;
+
+	sr_spew("Sanity-checking all input modules.");
+
+	inputs = sr_input_list();
+	for (i = 0; inputs[i]; i++) {
+		errors = 0;
+
+		d = (inputs[i]->id) ? inputs[i]->id : "NULL";
+
+		if (!inputs[i]->id) {
+			sr_err("No ID in module %d ('%s').", i, d);
+			errors++;
+		}
+		if (!inputs[i]->description) {
+			sr_err("No description in module %d ('%s').", i, d);
+			errors++;
+		}
+		if (!inputs[i]->format_match) {
+			sr_err("No format_match in module %d ('%s').", i, d);
+			errors++;
+		}
+		if (!inputs[i]->init) {
+			sr_err("No init in module %d ('%s').", i, d);
+			errors++;
+		}
+		if (!inputs[i]->loadfile) {
+			sr_err("No loadfile in module %d ('%s').", i, d);
+			errors++;
+		}
+
+		if (errors == 0)
+			continue;
+
+		ret = SR_ERR;
+	}
+
+	return ret;
+}
+
+/**
+ * Sanity-check all libsigrok output modules.
+ *
+ * @return SR_OK if all modules are OK, SR_ERR if one or more have issues.
+ */
+static int sanity_check_all_output_modules(void)
+{
+	int i, errors, ret = SR_OK;
+	struct sr_output_format **outputs;
+	const char *d;
+
+	sr_spew("Sanity-checking all output modules.");
+
+	outputs = sr_output_list();
+	for (i = 0; outputs[i]; i++) {
+		errors = 0;
+
+		d = (outputs[i]->id) ? outputs[i]->id : "NULL";
+
+		if (!outputs[i]->id) {
+			sr_err("No ID in module %d ('%s').", i, d);
+			errors++;
+		}
+		if (!outputs[i]->description) {
+			sr_err("No description in module %d ('%s').", i, d);
+			errors++;
+		}
+		if (outputs[i]->df_type < 10000 || outputs[i]->df_type > 10007) {
+			sr_err("Invalid df_type %d in module %d ('%s').",
+			       outputs[i]->df_type, i, d);
+			errors++;
+		}
+
+		/* All modules must provide a data or recv API callback. */
+		if (!outputs[i]->data && !outputs[i]->receive) {
+			sr_err("No data/receive in module %d ('%s').", i, d);
+			errors++;
+		}
+
+		/*
+		 * Currently most API calls are optional (their function
+		 * pointers can thus be NULL) in theory: init, event, cleanup.
+		 */
+
+		if (errors == 0)
+			continue;
+
+		ret = SR_ERR;
+	}
+
+	return ret;
+}
+
 /**
  * Initialize libsigrok.
  *
@@ -127,6 +319,8 @@
  *         the 'ctx' pointer is undefined and should not be used. Upon success,
  *         the context will be free'd by sr_exit() as part of the libsigrok
  *         shutdown.
+ *
+ * @since 0.1.0 (but the API changed in 0.2.0)
  */
 SR_API int sr_init(struct sr_context **ctx)
 {
@@ -138,6 +332,21 @@ SR_API int sr_init(struct sr_context **ctx)
 		return SR_ERR;
 	}
 
+	if (sanity_check_all_drivers() < 0) {
+		sr_err("Internal driver error(s), aborting.");
+		return ret;
+	}
+
+	if (sanity_check_all_input_modules() < 0) {
+		sr_err("Internal input module error(s), aborting.");
+		return ret;
+	}
+
+	if (sanity_check_all_output_modules() < 0) {
+		sr_err("Internal output module error(s), aborting.");
+		return ret;
+	}
+
 	/* + 1 to handle when struct sr_context has no members. */
 	context = g_try_malloc0(sizeof(struct sr_context) + 1);
 
@@ -150,14 +359,18 @@ SR_API int sr_init(struct sr_context **ctx)
 	ret = libusb_init(&context->libusb_ctx);
 	if (LIBUSB_SUCCESS != ret) {
 		sr_err("libusb_init() returned %s.\n", libusb_error_name(ret));
+		ret = SR_ERR;
 		goto done;
 	}
 #endif
 
 	*ctx = context;
+	context = NULL;
 	ret = SR_OK;
 
 done:
+	if (context)
+		g_free(context);
 	return ret;
 }
 
@@ -167,6 +380,8 @@ done:
  * @param ctx Pointer to a libsigrok context struct. Must not be NULL.
  *
  * @return SR_OK upon success, a (negative) error code otherwise.
+ *
+ * @since 0.1.0 (but the API changed in 0.2.0)
  */
 SR_API int sr_exit(struct sr_context *ctx)
 {