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1 | /////////////////////////////////////////////////////////////////////////////// |
2 | // Copyright (c) 2000-2014 Ericsson Telecom AB | |
3 | // All rights reserved. This program and the accompanying materials | |
4 | // are made available under the terms of the Eclipse Public License v1.0 | |
5 | // which accompanies this distribution, and is available at | |
6 | // http://www.eclipse.org/legal/epl-v10.html | |
7 | /////////////////////////////////////////////////////////////////////////////// | |
8 | #include "jnimw.h" | |
9 | #include <stdio.h> | |
10 | #include <stdlib.h> | |
11 | #include <unistd.h> | |
12 | #include <memory.h> | |
13 | #include <string.h> | |
14 | #include <errno.h> | |
15 | ||
16 | #include "../core/Logger.hh" | |
17 | ||
18 | using mctr::MainController; | |
19 | using namespace jnimw; | |
20 | ||
21 | Jnimw *Jnimw::userInterface; | |
22 | bool Jnimw::has_status_message_pending; | |
23 | int Jnimw::pipe_size; | |
24 | ||
25 | /** | |
26 | * The last MC state. It is needed by status_change(), as | |
27 | * status change message is written to the pipe when any status (MC, TC, HC) was changed AND | |
28 | * ( currently there is no status change message on the pipe (signalled by has_status_message_pending) | |
29 | * OR MC state is changed ) | |
30 | */ | |
31 | mctr::mc_state_enum last_mc_state; | |
32 | ||
33 | pthread_mutex_t Jnimw::mutex = PTHREAD_MUTEX_INITIALIZER; | |
34 | ||
35 | /** | |
36 | * Config data, which was created by Java_org_eclipse_titan_executor_jni_JNIMiddleWare_set_1cfg_1file() | |
37 | * by a JNI request, and the result will be used by | |
38 | * Java_org_eclipse_titan_executor_jni_JNIMiddleWare_configure(). | |
39 | * This is done this way to use process_config_read_file() for processing the config file | |
40 | * instead of processing it on the Java side. | |
41 | */ | |
42 | config_data Jnimw::mycfg; | |
43 | ||
44 | void Jnimw::lock() | |
45 | { | |
46 | int result = pthread_mutex_lock(&mutex); | |
47 | if (result > 0) { | |
48 | fatal_error("Jni middleware::lock: " | |
49 | "pthread_mutex_lock failed with code %d.", result); | |
50 | } | |
51 | } | |
52 | ||
53 | void Jnimw::unlock() | |
54 | { | |
55 | int result = pthread_mutex_unlock(&mutex); | |
56 | if (result > 0) { | |
57 | fatal_error("Jni middleware:::unlock: " | |
58 | "pthread_mutex_unlock failed with code %d.", result); | |
59 | } | |
60 | } | |
61 | ||
62 | void Jnimw::fatal_error(const char *fmt, ...) | |
63 | { | |
64 | va_list ap; | |
65 | va_start(ap, fmt); | |
66 | vfprintf(stderr, fmt, ap); | |
67 | va_end(ap); | |
68 | if (errno != 0) fprintf(stderr, " (%s)", strerror(errno)); | |
69 | putc('\n', stderr); | |
70 | exit(EXIT_FAILURE); | |
71 | } | |
72 | ||
73 | int Jnimw::enterLoop(int, char*[]) { | |
74 | return EXIT_SUCCESS; | |
75 | } | |
76 | ||
77 | Jnimw::Jnimw() | |
78 | { | |
79 | pipe_buffer = NULL; | |
80 | pipe_fd[0] = -1; | |
81 | pipe_fd[1] = -1; | |
82 | ||
83 | create_pipe(); | |
84 | FD_ZERO(&readfds); | |
85 | FD_SET(pipe_fd[0], &readfds); | |
86 | ||
87 | has_status_message_pending = false; | |
88 | last_mc_state = mctr::MC_INACTIVE; | |
89 | pipe_size = 0; | |
90 | ||
91 | if (pthread_mutex_init(&mutex, NULL)) | |
92 | fatal_error("Jni middleware::constructor: pthread_mutex_init failed."); | |
93 | ||
94 | } | |
95 | ||
96 | Jnimw::~Jnimw() | |
97 | { | |
98 | destroy_pipe(); | |
99 | pthread_mutex_destroy(&mutex); | |
100 | } | |
101 | ||
102 | ||
103 | void strreverse(char* begin, char* end) { | |
104 | char aux; | |
105 | while(end>begin){ | |
106 | aux=*end, *end--=*begin, *begin++=aux; | |
107 | } | |
108 | } | |
109 | ||
110 | /** | |
111 | * Ansi C "itoa" based on Kernighan & Ritchie's "Ansi C": | |
112 | */ | |
113 | void itoa(int value, char* str) { | |
114 | static char num[] = "0123456789"; | |
115 | char* wstr=str; | |
116 | ||
117 | // Conversion. Number is reversed. | |
118 | do *wstr++ = num[value%10]; while(value/=10); | |
119 | *wstr='\0'; | |
120 | ||
121 | // Reverse string | |
122 | strreverse(str,wstr-1); | |
123 | } | |
124 | ||
125 | void create_packet_header(const int source_length, char* dest, char method_id) { | |
126 | char packet_size[6]; | |
127 | dest[0] = method_id; | |
128 | itoa(source_length, packet_size); | |
129 | int i; | |
130 | for(i = 1; i < 6; i++) dest[i] = '0'; | |
131 | dest[6] = '\0'; | |
132 | int j = strlen(packet_size); | |
133 | for(i = 0; i < j; i++) dest[5-i] = packet_size[j-i-1]; | |
134 | } | |
135 | ||
136 | char* stuffer(const char* msg){ | |
137 | char* msg_stuffed = (char*) malloc(strlen(msg)*2); | |
138 | int i = 0; | |
139 | int j = 0; | |
140 | while(msg[i] != '\0') { | |
141 | if(msg[i] != '|' && msg[i] != '\\') { | |
142 | msg_stuffed[j++] = msg[i]; | |
143 | } else { | |
144 | msg_stuffed[j++] = '\\'; | |
145 | msg_stuffed[j++] = msg[i]; | |
146 | } | |
147 | i++; | |
148 | } | |
149 | msg_stuffed[j] = '\0'; | |
150 | ||
151 | return msg_stuffed; | |
152 | } | |
153 | ||
154 | //---------------------------------------------------------------------------- | |
155 | // USERINTERFACE | |
156 | ||
157 | void Jnimw::status_change() | |
158 | { | |
159 | lock(); | |
160 | mctr::mc_state_enum mc_state = MainController::get_state(); | |
161 | if(last_mc_state != mc_state || !has_status_message_pending){ | |
162 | char str[7]; | |
163 | sprintf( str,"S%02d000", mc_state ); | |
164 | write_pipe( str ); | |
165 | } | |
166 | has_status_message_pending = true; | |
167 | last_mc_state = mc_state; | |
168 | unlock(); | |
169 | } | |
170 | ||
171 | //---------------------------------------------------------------------------- | |
172 | // USERINTERFACE | |
173 | ||
174 | void Jnimw::error(int severity, const char* msg) | |
175 | { | |
176 | char *msg_stuffed = stuffer(msg); | |
177 | expstring_t pipe_s; | |
178 | ||
179 | // creating packet header | |
180 | char packet_header[7]; | |
181 | expstring_t tmp; | |
182 | tmp = mprintf("%d|%s", severity, msg_stuffed); | |
183 | create_packet_header(strlen(tmp), packet_header, 'E'); | |
184 | ||
185 | pipe_s = mprintf("%s%s", packet_header, tmp); | |
186 | free(msg_stuffed); | |
187 | ||
188 | write_pipe(pipe_s); | |
189 | } | |
190 | ||
191 | //---------------------------------------------------------------------------- | |
192 | // USERINTERFACE | |
193 | ||
194 | void Jnimw::notify(const struct timeval* time, const char* source, | |
195 | int severity, const char* msg) | |
196 | { | |
197 | char *source_stuffed = stuffer(source); | |
198 | char *msg_stuffed = stuffer(msg); | |
199 | expstring_t pipe_s; | |
200 | ||
201 | // creating packet header | |
202 | char packet_header[7]; | |
203 | expstring_t tmp; | |
204 | tmp = mprintf("%ld|%ld|%s|%d|%s", time->tv_sec, time->tv_usec, source_stuffed, severity, msg_stuffed); | |
205 | create_packet_header(strlen(tmp), packet_header, 'N'); | |
206 | ||
207 | pipe_s = mprintf("%s%s", packet_header, tmp); | |
208 | write_pipe(pipe_s); | |
209 | free(source_stuffed); | |
210 | free(msg_stuffed); | |
211 | Free(tmp); | |
212 | Free(pipe_s); | |
213 | } | |
214 | ||
215 | void Jnimw::create_pipe() | |
216 | { | |
217 | if (pipe(pipe_fd)){ | |
218 | printf("Jnimw::create_pipes(): pipe system call failed.\n"); | |
219 | } | |
220 | } | |
221 | ||
222 | void Jnimw::destroy_pipe() | |
223 | { | |
224 | close(pipe_fd[0]); | |
225 | pipe_fd[0] = -1; | |
226 | close(pipe_fd[1]); | |
227 | pipe_fd[1] = -1; | |
228 | } | |
229 | ||
230 | bool Jnimw::is_pipe_readable(){ | |
231 | // TODO maybe this could get faster | |
232 | timeval time; | |
233 | time.tv_sec = 0; | |
234 | time.tv_usec = 0; | |
235 | fd_set read_set; | |
236 | FD_ZERO(&read_set); | |
237 | FD_SET(pipe_fd[0], &read_set); | |
238 | int ret = select(pipe_fd[0] + 1 , &read_set, NULL, NULL, &time); | |
239 | return ret > 0; | |
240 | } | |
241 | ||
242 | char* Jnimw::read_pipe() | |
243 | { | |
244 | select(pipe_fd[0] + 1 , &readfds, NULL, NULL, NULL); | |
245 | lock(); | |
246 | ||
247 | pipe_buffer = (char*)malloc(7); | |
248 | int ret = read(pipe_fd[0], pipe_buffer, 6); | |
249 | if(ret != 6){ | |
250 | printf("Malformed packet arrived!\n"); | |
251 | } | |
252 | ||
253 | pipe_size-= ret; | |
254 | ||
255 | if(pipe_buffer[0] == 'S'){ | |
256 | has_status_message_pending = false; | |
257 | ||
258 | unlock(); | |
259 | return pipe_buffer; | |
260 | } | |
261 | ||
262 | int packet_size = (pipe_buffer[1]-48) * 10000 + (pipe_buffer[2]-48) * 1000 + | |
263 | (pipe_buffer[3]-48) * 100 + (pipe_buffer[4]-48) * 10 + (pipe_buffer[5]-48); | |
264 | ||
265 | pipe_buffer = (char*)realloc(pipe_buffer, packet_size + 7); | |
266 | ||
267 | ret = read(pipe_fd[0],pipe_buffer + 6, packet_size); | |
268 | if(ret != packet_size){ | |
269 | printf("Jnimw::read_pipe(): read system call failed\n"); | |
270 | } | |
271 | pipe_buffer[packet_size + 6] = '\0'; | |
272 | ||
273 | pipe_size-=ret; | |
274 | ||
275 | unlock(); | |
276 | return pipe_buffer; | |
277 | } | |
278 | ||
279 | void Jnimw::write_pipe(const char *buf) | |
280 | { | |
281 | if (write(pipe_fd[1], buf, strlen(buf)) < 0){ | |
282 | printf("Jnimw::write_pipe(): write system call failed\n"); | |
283 | } | |
284 | ||
285 | pipe_size+=strlen(buf); | |
286 | } |