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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <signal.h>
#include <string.h>
#include <jni.h>
#include "exec0.h"
#include <Spawner.h>
#define DEBUGIT 0
/*
* Header for class org_eclipse_cdt_utils_spawner_Spawner
*/
#if DEBUGIT
static void print_array(char **c_array)
{
if (c_array) {
char **p = c_array;
for (; *p; p++) {
if (*p) {
fprintf(stderr, " %s", *p);
}
}
} else {
fprintf(stderr, "null");
}
fprintf(stderr, "\n");
}
#endif
static char **alloc_c_array(JNIEnv * env, jobjectArray j_array)
{
int i;
jint c_array_size = (*env)->GetArrayLength(env, j_array);
char **c_array = calloc(c_array_size + 1, sizeof(*c_array));
if (c_array == NULL)
return NULL;
for (i = 0; i < c_array_size; i++) {
jstring j_str =
(jstring) (*env)->GetObjectArrayElement(env, j_array, i);
const char *c_str = (*env)->GetStringUTFChars(env, j_str, NULL);
c_array[i] = (char *) strdup(c_str);
(*env)->ReleaseStringUTFChars(env, j_str, c_str);
(*env)->DeleteLocalRef(env, j_str);
}
return c_array;
}
static void free_c_array(char **c_array)
{
if (c_array) {
char **p = c_array;
for (; *p; p++) {
if (*p) {
free(*p);
}
}
free(c_array);
}
}
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_spawner_Spawner_exec1(JNIEnv * env, jobject jobj,
jobjectArray jcmd,
jobjectArray jenv,
jstring jdir)
{
const char *dirpath = (*env)->GetStringUTFChars(env, jdir, NULL);
char **cmd;
char **envp;
pid_t pid = -1;
cmd = alloc_c_array(env, jcmd);
if (cmd == NULL)
goto bail_out;
envp = alloc_c_array(env, jenv);
if (envp == NULL)
goto bail_out;
#if DEBUGIT
fprintf(stderr, "command:");
print_array(cmd);
fprintf(stderr, "Envp:");
print_array(envp);
fprintf(stderr, "dirpath: %s\n", dirpath);
#endif
pid = exec0(cmd[0], cmd, envp, dirpath, NULL);
if (pid < 0)
goto bail_out;
bail_out:
(*env)->ReleaseStringUTFChars(env, jdir, dirpath);
if (cmd)
free_c_array(cmd);
if (envp)
free_c_array(envp);
return pid;
}
/*
* Class: org_eclipse_cdt_utils_spawner_Spawner
* Method: exec0
* Signature: ([Ljava/lang/String;[Ljava/lang/String;Ljava/lang/String;[I)I
*/
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_spawner_Spawner_exec0(JNIEnv * env, jobject jobj,
jobjectArray jcmd,
jobjectArray jenv,
jstring jdir,
jintArray jchannels)
{
jint *channels = (*env)->GetIntArrayElements(env, jchannels, 0);
const char *dirpath = (*env)->GetStringUTFChars(env, jdir, NULL);
char **cmd;
char **envp;
int fd[3];
pid_t pid = -1;
if (channels == NULL)
goto bail_out;
cmd = alloc_c_array(env, jcmd);
if (cmd == NULL)
goto bail_out;
envp = alloc_c_array(env, jenv);
if (envp == NULL)
goto bail_out;
#if DEBUGIT
fprintf(stderr, "command:");
print_array(cmd);
fprintf(stderr, "Envp:");
print_array(envp);
fprintf(stderr, "dirpath: %s\n", dirpath);
#endif
pid = exec0(cmd[0], cmd, envp, dirpath, fd);
if (pid < 0)
goto bail_out;
channels[0] = fd[0];
channels[1] = fd[1];
channels[2] = fd[2];
bail_out:
(*env)->ReleaseIntArrayElements(env, jchannels, channels, 0);
(*env)->ReleaseStringUTFChars(env, jdir, dirpath);
if (cmd)
free_c_array(cmd);
if (envp)
free_c_array(envp);
return pid;
}
/*
* Class: org_eclipse_cdt_utils_spawner_Spawner
* Method: raise
* Signature: (II)I
*/
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_spawner_Spawner_raise(JNIEnv * env, jobject jobj,
jint pid, jint sig)
{
int status = -1;
switch (sig) {
case 0: /* NOOP */
status = kill(pid, 0);
break;
case 2: /* INTERRUPT */
status = kill(pid, SIGINT);
break;
case 9: /* KILL */
status = kill(pid, SIGKILL);
break;
case 15: /* TERM */
status = kill(pid, SIGTERM);
break;
default:
status = kill(pid, sig); /* WHAT ?? */
break;
}
return status;
}
/*
* Class: org_eclipse_cdt_utils_spawner_Spawner
* Method: waitFor
* Signature: (I)I
*/
JNIEXPORT jint JNICALL
Java_org_eclipse_cdt_utils_spawner_Spawner_waitFor(JNIEnv * env,
jobject jobj, jint pid)
{
return wait0(pid);
}
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