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path: root/src/libsystemd/sd-bus/busctl-introspect.c
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Diffstat (limited to 'src/libsystemd/sd-bus/busctl-introspect.c')
-rw-r--r--src/libsystemd/sd-bus/busctl-introspect.c228
1 files changed, 183 insertions, 45 deletions
diff --git a/src/libsystemd/sd-bus/busctl-introspect.c b/src/libsystemd/sd-bus/busctl-introspect.c
index 041702864b..15c10da7e9 100644
--- a/src/libsystemd/sd-bus/busctl-introspect.c
+++ b/src/libsystemd/sd-bus/busctl-introspect.c
@@ -38,11 +38,30 @@ typedef struct Context {
char *member_signature;
char *member_result;
uint64_t member_flags;
+ bool member_writable;
const char *current;
void *xml_state;
} Context;
+static void context_reset_member(Context *c) {
+ free(c->member_name);
+ free(c->member_signature);
+ free(c->member_result);
+
+ c->member_name = c->member_signature = c->member_result = NULL;
+ c->member_flags = 0;
+ c->member_writable = false;
+}
+
+static void context_reset_interface(Context *c) {
+ free(c->interface_name);
+ c->interface_name = NULL;
+ c->interface_flags = 0;
+
+ context_reset_member(c);
+}
+
static int parse_xml_annotation(Context *context, uint64_t *flags) {
enum {
@@ -105,11 +124,11 @@ static int parse_xml_annotation(Context *context, uint64_t *flags) {
} else if (streq_ptr(field, "org.freedesktop.DBus.Property.EmitsChangedSignal")) {
if (streq_ptr(value, "const"))
- *flags |= SD_BUS_VTABLE_PROPERTY_CONST;
+ *flags = (*flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION|SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE)) | SD_BUS_VTABLE_PROPERTY_CONST;
else if (streq_ptr(value, "invalidates"))
- *flags |= SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION;
+ *flags = (*flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_CONST)) | SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION;
else if (streq_ptr(value, "false"))
- *flags |= SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE;
+ *flags = *flags & ~(SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE|SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_PROPERTY_EMITS_INVALIDATION);
}
}
@@ -182,7 +201,7 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
STATE_PROPERTY_ACCESS,
} state = STATE_NODE;
- _cleanup_free_ char *node_path = NULL;
+ _cleanup_free_ char *node_path = NULL, *argument_type = NULL, *argument_direction = NULL;
const char *np = prefix;
int r;
@@ -225,7 +244,6 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
if (streq_ptr(name, "interface"))
state = STATE_INTERFACE;
-
else if (streq_ptr(name, "node")) {
r = parse_xml_node(context, np, n_depth+1);
@@ -297,9 +315,10 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
state = STATE_METHOD;
else if (streq_ptr(name, "signal"))
state = STATE_SIGNAL;
- else if (streq_ptr(name, "property"))
+ else if (streq_ptr(name, "property")) {
+ context->member_flags |= SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE;
state = STATE_PROPERTY;
- else if (streq_ptr(name, "annotation")) {
+ } else if (streq_ptr(name, "annotation")) {
r = parse_xml_annotation(context, &context->interface_flags);
if (r < 0)
return r;
@@ -308,11 +327,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "interface")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "interface"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_interface) {
+ r = context->ops->on_interface(context->interface_name, context->interface_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_interface(context);
+ }
state = STATE_NODE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <interface>. (1)");
return -EINVAL;
}
@@ -321,9 +350,15 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_INTERFACE_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ if (n_depth == 0) {
+ free(context->interface_name);
+ context->interface_name = name;
+ name = NULL;
+ }
+
state = STATE_INTERFACE;
- else {
+ } else {
log_error("Unexpected token in <interface>. (2)");
return -EINVAL;
}
@@ -351,11 +386,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "method")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "method"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_method) {
+ r = context->ops->on_method(context->interface_name, context->member_name, context->member_signature, context->member_result, context->member_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_member(context);
+ }
state = STATE_INTERFACE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <method> (1).");
return -EINVAL;
}
@@ -364,9 +409,16 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_METHOD_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_name);
+ context->member_name = name;
+ name = NULL;
+ }
+
state = STATE_METHOD;
- else {
+ } else {
log_error("Unexpected token in <method> (2).");
return -EINVAL;
}
@@ -396,11 +448,27 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "arg")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "arg"))) {
+
+ if (n_depth == 0) {
+
+ if (argument_type) {
+ if (!argument_direction || streq(argument_direction, "in")) {
+ if (!strextend(&context->member_signature, argument_type, NULL))
+ return log_oom();
+ } else if (streq(argument_direction, "out")) {
+ if (!strextend(&context->member_result, argument_type, NULL))
+ return log_oom();
+ }
+ }
- state = STATE_METHOD;
+ free(argument_type);
+ free(argument_direction);
+ argument_type = argument_direction = NULL;
+ }
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ state = STATE_METHOD;
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in method <arg>. (1)");
return -EINVAL;
}
@@ -420,9 +488,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_METHOD_ARG_TYPE:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ free(argument_type);
+ argument_type = name;
+ name = NULL;
+
state = STATE_METHOD_ARG;
- else {
+ } else {
log_error("Unexpected token in method <arg>. (3)");
return -EINVAL;
}
@@ -431,9 +503,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_METHOD_ARG_DIRECTION:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ free(argument_direction);
+ argument_direction = name;
+ name = NULL;
+
state = STATE_METHOD_ARG;
- else {
+ } else {
log_error("Unexpected token in method <arg>. (4)");
return -EINVAL;
}
@@ -461,11 +537,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "signal")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "signal"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_signal) {
+ r = context->ops->on_signal(context->interface_name, context->member_name, context->member_signature, context->member_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_member(context);
+ }
state = STATE_INTERFACE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <signal>. (1)");
return -EINVAL;
}
@@ -474,9 +560,16 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_SIGNAL_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_name);
+ context->member_name = name;
+ name = NULL;
+ }
+
state = STATE_SIGNAL;
- else {
+ } else {
log_error("Unexpected token in <signal>. (2)");
return -EINVAL;
}
@@ -505,11 +598,18 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
return -EINVAL;
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "arg")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "arg"))) {
- state = STATE_SIGNAL;
+ if (argument_type) {
+ if (!strextend(&context->member_signature, argument_type, NULL))
+ return log_oom();
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ free(argument_type);
+ argument_type = NULL;
+ }
+
+ state = STATE_SIGNAL;
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in signal <arg> (1).");
return -EINVAL;
}
@@ -529,9 +629,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_SIGNAL_ARG_TYPE:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+ free(argument_type);
+ argument_type = name;
+ name = NULL;
+
state = STATE_SIGNAL_ARG;
- else {
+ } else {
log_error("Unexpected token in signal <arg> (3).");
return -EINVAL;
}
@@ -563,11 +667,21 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
}
} else if (t == XML_TAG_CLOSE_EMPTY ||
- (t == XML_TAG_CLOSE && streq_ptr(name, "property")))
+ (t == XML_TAG_CLOSE && streq_ptr(name, "property"))) {
+
+ if (n_depth == 0) {
+ if (context->ops->on_property) {
+ r = context->ops->on_property(context->interface_name, context->member_name, context->member_signature, context->member_writable, context->member_flags, context->userdata);
+ if (r < 0)
+ return r;
+ }
+
+ context_reset_member(context);
+ }
state = STATE_INTERFACE;
- else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
+ } else if (t != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token in <property>. (1)");
return -EINVAL;
}
@@ -576,9 +690,15 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_PROPERTY_NAME:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_name);
+ context->member_name = name;
+ name = NULL;
+ }
state = STATE_PROPERTY;
- else {
+ } else {
log_error("Unexpected token in <property>. (2)");
return -EINVAL;
}
@@ -587,9 +707,16 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_PROPERTY_TYPE:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (n_depth == 0) {
+ free(context->member_signature);
+ context->member_signature = name;
+ name = NULL;
+ }
+
state = STATE_PROPERTY;
- else {
+ } else {
log_error("Unexpected token in <property>. (3)");
return -EINVAL;
}
@@ -598,9 +725,13 @@ static int parse_xml_node(Context *context, const char *prefix, unsigned n_depth
case STATE_PROPERTY_ACCESS:
- if (t == XML_ATTRIBUTE_VALUE)
+ if (t == XML_ATTRIBUTE_VALUE) {
+
+ if (streq(name, "readwrite") || streq(name, "write"))
+ context->member_writable = true;
+
state = STATE_PROPERTY;
- else {
+ } else {
log_error("Unexpected token in <property>. (4)");
return -EINVAL;
}
@@ -629,27 +760,34 @@ int parse_xml_introspect(const char *prefix, const char *xml, const XMLIntrospec
r = xml_tokenize(&context.current, &name, &context.xml_state, NULL);
if (r < 0) {
log_error("XML parse error");
- return r;
+ goto finish;
}
- if (r == XML_END)
+ if (r == XML_END) {
+ r = 0;
break;
+ }
if (r == XML_TAG_OPEN) {
if (streq(name, "node")) {
r = parse_xml_node(&context, prefix, 0);
if (r < 0)
- return r;
+ goto finish;
} else {
log_error("Unexpected tag '%s' in introspection data.", name);
- return -EBADMSG;
+ r = -EBADMSG;
+ goto finish;
}
} else if (r != XML_TEXT || !in_charset(name, WHITESPACE)) {
log_error("Unexpected token.");
- return -EINVAL;
+ r = -EBADMSG;
+ goto finish;
}
}
- return 0;
+finish:
+ context_reset_interface(&context);
+
+ return r;
}
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-16 21:46:06 +0000