forked from CyanogenMod/android_system_core
/
FrameworkListener.cpp
146 lines (127 loc) · 3.67 KB
/
FrameworkListener.cpp
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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <string.h>
#define LOG_TAG "FrameworkListener"
#include <cutils/log.h>
#include <sysutils/FrameworkListener.h>
#include <sysutils/FrameworkCommand.h>
#include <sysutils/SocketClient.h>
FrameworkListener::FrameworkListener(const char *socketName) :
SocketListener(socketName, true) {
mCommands = new FrameworkCommandCollection();
}
bool FrameworkListener::onDataAvailable(SocketClient *c) {
char buffer[255];
int len;
if ((len = read(c->getSocket(), buffer, sizeof(buffer) -1)) < 0) {
SLOGE("read() failed (%s)", strerror(errno));
return false;
} else if (!len)
return false;
int offset = 0;
int i;
for (i = 0; i < len; i++) {
if (buffer[i] == '\0') {
dispatchCommand(c, buffer + offset);
offset = i + 1;
}
}
return true;
}
void FrameworkListener::registerCmd(FrameworkCommand *cmd) {
mCommands->push_back(cmd);
}
void FrameworkListener::dispatchCommand(SocketClient *cli, char *data) {
FrameworkCommandCollection::iterator i;
int argc = 0;
char *argv[FrameworkListener::CMD_ARGS_MAX];
char tmp[255];
char *p = data;
char *q = tmp;
bool esc = false;
bool quote = false;
int k;
memset(argv, 0, sizeof(argv));
memset(tmp, 0, sizeof(tmp));
while(*p) {
if (*p == '\\') {
if (esc) {
*q++ = '\\';
esc = false;
} else
esc = true;
p++;
continue;
} else if (esc) {
if (*p == '"')
*q++ = '"';
else if (*p == '\\')
*q++ = '\\';
else {
cli->sendMsg(500, "Unsupported escape sequence", false);
goto out;
}
p++;
esc = false;
continue;
}
if (*p == '"') {
if (quote)
quote = false;
else
quote = true;
p++;
continue;
}
*q = *p++;
if (!quote && *q == ' ' && argc<FrameworkListener::CMD_ARGS_MAX) {
*q = '\0';
argv[argc++] = strdup(tmp);
memset(tmp, 0, sizeof(tmp));
q = tmp;
continue;
}
q++;
}
if (argc >= FrameworkListener::CMD_ARGS_MAX)
goto out;
argv[argc++] = strdup(tmp);
#if 0
for (k = 0; k < argc; k++) {
SLOGD("arg[%d] = '%s'", k, argv[k]);
}
#endif
if (quote) {
cli->sendMsg(500, "Unclosed quotes error", false);
goto out;
}
for (i = mCommands->begin(); i != mCommands->end(); ++i) {
FrameworkCommand *c = *i;
if (!strcmp(argv[0], c->getCommand())) {
if (c->runCommand(cli, argc, argv)) {
SLOGW("Handler '%s' error (%s)", c->getCommand(), strerror(errno));
}
goto out;
}
}
cli->sendMsg(500, "Command not recognized", false);
out:
int j;
for (j = 0; j < argc; j++)
free(argv[j]);
return;
}