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/*******************************************************************************
* Copyright (c) 2019.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
* The Eclipse Public License is available at
* http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
* You may elect to redistribute this code under either of these licenses.
*******************************************************************************/
#include <tcf/config.h>
#if SERVICE_ContextReset
#include <tcf/framework/context.h>
#include <tcf/framework/json.h>
#include <tcf/framework/myalloc.h>
#include <tcf/framework/trace.h>
#include <tcf/services/contextreset.h>
#include <assert.h>
typedef struct ResetInfo ResetInfo;
typedef struct ContextExtensionReset {
ResetInfo * resets;
unsigned resets_cnt;
unsigned resets_max;
} ContextExtensionRS;
struct ResetInfo {
const char * type;
const char * desc;
ContextReset * reset;
};
static const char * CONTEXT_RESET = "ContextReset";
static size_t context_extension_offset = 0;
#define EXT(ctx) (ctx ? ((ContextExtensionRS *)((char *)(ctx) + context_extension_offset)) : NULL)
static ResetInfo * find_reset(Context * ctx, const char * type) {
if (type != NULL) {
unsigned i = 0;
ContextExtensionRS * ext = EXT(ctx);
while (i < ext->resets_cnt) {
if (strcmp(ext->resets[i].type, type) == 0)
return ext->resets + i;
i++;
}
}
return NULL;
}
void add_reset(Context * ctx, const char * type, const char * desc, ContextReset * reset) {
ContextExtensionRS * ext = EXT(ctx);
ResetInfo * ri;
assert(ctx == context_get_group(ctx, CONTEXT_GROUP_CPU));
ri = find_reset(ctx, type);
if (ri == NULL) {
if (ext->resets_cnt >= ext->resets_max) {
ext->resets_max += 4;
ext->resets = (ResetInfo *)loc_realloc(ext->resets, sizeof(ResetInfo) * ext->resets_max);
}
ri = ext->resets + ext->resets_cnt++;
ri->type = loc_strdup(type);
}
else {
loc_free(ri->desc);
}
ri->desc = loc_strdup(desc);
ri->reset = reset;
}
static void command_get_capabilities(char * token, Channel * c) {
char id[256];
Context * ctx;
OutputStream * out = &c->out;
int err = 0;
json_read_string(&c->inp, id, sizeof(id));
json_test_char(&c->inp, MARKER_EOA);
json_test_char(&c->inp, MARKER_EOM);
ctx = id2ctx(id);
if (ctx == NULL) err = ERR_INV_CONTEXT;
else if (ctx->exited) err = ERR_ALREADY_EXITED;
write_stringz(out, "R");
write_stringz(out, token);
write_errno(out, err);
write_stream(out, '[');
if (!err) {
ContextExtensionRS * ext = EXT(context_get_group(ctx, CONTEXT_GROUP_CPU));
unsigned i;
for (i = 0; i < ext->resets_cnt; i++) {
ResetInfo * ri = ext->resets + i;
if (i > 0) write_stream(&c->out, ',');
write_stream(out, '{');
json_write_string(out, "Type");
write_stream(out, ':');
json_write_string(out, ri->type);
write_stream(out, ',');
json_write_string(out, "Description");
write_stream(out, ':');
json_write_string(out, ri->desc);
write_stream(out, '}');
}
}
write_stream(out, ']');
write_stream(out, 0);
write_stream(out, MARKER_EOM);
}
static void read_reset_params(InputStream * inp, const char * name, void * x) {
ResetParams * params = (ResetParams *)x;
if (strcmp(name, "Suspend") == 0) {
params->suspend = json_read_boolean(inp);
}
else {
ResetParameter * param = (ResetParameter *)loc_alloc_zero(sizeof(ResetParameter));
param->name = loc_strdup(name);
param->value = json_read_object(inp);
param->next = params->list;
params->list = param;
}
}
static void command_reset(char * token, Channel * c) {
char id[256];
char type[256];
Context * ctx;
OutputStream * out = &c->out;
ResetParams params;
int err = 0;
memset(¶ms, 0, sizeof(params));
json_read_string(&c->inp, id, sizeof(id));
json_test_char(&c->inp, MARKER_EOA);
json_read_string(&c->inp, type, sizeof(type));
json_test_char(&c->inp, MARKER_EOA);
json_read_struct(&c->inp, read_reset_params, ¶ms);
json_test_char(&c->inp, MARKER_EOA);
json_test_char(&c->inp, MARKER_EOM);
ctx = id2ctx(id);
if (ctx == NULL) err = ERR_INV_CONTEXT;
else if (ctx->exited) err = ERR_ALREADY_EXITED;
write_stringz(out, "R");
write_stringz(out, token);
if (!err) {
Context * cpu = context_get_group(ctx, CONTEXT_GROUP_CPU);
ResetInfo * rst = find_reset(cpu, type);
if (rst == NULL) err = set_errno(ERR_OTHER, "Unsupported reset type");
else if (rst->reset(ctx, ¶ms) < 0) err = errno;
}
while (params.list != NULL) {
ResetParameter * p = params.list;
params.list = p->next;
loc_free(p->name);
loc_free(p->value);
loc_free(p);
}
write_errno(out, err);
write_stream(out, 0);
write_stream(out, MARKER_EOM);
}
static void event_context_disposed(Context * ctx, void * args) {
ContextExtensionRS * ext = EXT(ctx);
unsigned i;
(void)args;
for (i = 0; i < ext->resets_cnt; i++) {
ResetInfo * ri = ext->resets + i;
loc_free(ri->type);
loc_free(ri->desc);
}
loc_free(ext->resets);
}
void ini_context_reset_service(Protocol * proto) {
static ContextEventListener listener = {
.context_disposed = event_context_disposed
};
add_context_event_listener(&listener, NULL);
context_extension_offset = context_extension(sizeof(ContextExtensionRS));
add_command_handler(proto, CONTEXT_RESET, "getCapabilities", command_get_capabilities);
add_command_handler(proto, CONTEXT_RESET, "reset", command_reset);
}
#endif /* SERVICE_ContextReset */
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