feat: refactor launcher.c
Co-authored-by: cxy004 <cxy004@qq.com>
This commit is contained in:
parent
b1ae874394
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05372f10e8
129
launcher.c
129
launcher.c
@ -13,18 +13,21 @@
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#include <time.h>
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#include <unistd.h>
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struct Config {
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char *memory_limit;
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char *nproc_limit;
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char *time_limit;
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char *sandbox_path;
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char *sandbox_template;
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char *sandbox_action;
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char *file_input;
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char *file_output;
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char *file_info;
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char *program;
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} config;
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enum ConfigIndex {
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memory_limit = 0,
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nproc_limit,
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time_limit,
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sandbox_path,
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sandbox_template,
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sandbox_action,
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file_input,
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file_output,
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file_info,
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program,
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CONFIG_INDEX_MAX
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};
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char *config[CONFIG_INDEX_MAX];
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void print_help(char *self) {
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LOG_WARN("Usage:");
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@ -44,57 +47,35 @@ void print_help(char *self) {
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}
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void parse(int argc, char *argv[]) {
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static struct option long_options[] = {
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{"memory_limit", required_argument, NULL, 0},
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{"nproc_limit", required_argument, NULL, 0},
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{"time_limit", required_argument, NULL, 0},
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{"sandbox_path", required_argument, NULL, 0},
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{"sandbox_template", required_argument, NULL, 0},
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{"sandbox_action", required_argument, NULL, 0},
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{"file_input", required_argument, NULL, 0},
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{"file_output", required_argument, NULL, 0},
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{"file_info", required_argument, NULL, 0},
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{"program", required_argument, NULL, 0},
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{"help", no_argument, NULL, 0},
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{NULL, 0, NULL, 0}
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static struct option options[] = {
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[memory_limit] = {"memory_limit", required_argument, NULL, 0},
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[nproc_limit] = {"nproc_limit", required_argument, NULL, 0},
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[time_limit] = {"time_limit", required_argument, NULL, 0},
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[sandbox_path] = {"sandbox_path", required_argument, NULL, 0},
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[sandbox_template] = {"sandbox_template", required_argument, NULL, 0},
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[sandbox_action] = {"sandbox_action", required_argument, NULL, 0},
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[file_input] = {"file_input", required_argument, NULL, 0},
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[file_output] = {"file_output", required_argument, NULL, 0},
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[file_info] = {"file_info", required_argument, NULL, 0},
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[program] = {"program", required_argument, NULL, 0},
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[CONFIG_INDEX_MAX] = {"help", no_argument, NULL, 0},
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[CONFIG_INDEX_MAX + 1] = {NULL, 0, NULL, 0}
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};
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int c, idx = 0;
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while ((c = getopt_long_only(argc, argv, "", long_options, &idx)) != -1) {
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while ((c = getopt_long_only(argc, argv, "", options, &idx)) != -1) {
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if (c != 0) break;
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const char *key = long_options[idx].name;
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char *val = optarg;
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if (strcmp(key, "memory_limit") == 0) {
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config.memory_limit = val;
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} else if (strcmp(key, "nproc_limit") == 0) {
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config.nproc_limit = val;
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} else if (strcmp(key, "time_limit") == 0) {
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config.time_limit = val;
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} else if (strcmp(key, "sandbox_path") == 0) {
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config.sandbox_path = val;
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} else if (strcmp(key, "sandbox_template") == 0) {
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config.sandbox_template = val;
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} else if (strcmp(key, "sandbox_action") == 0) {
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config.sandbox_action = val;
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} else if (strcmp(key, "file_input") == 0) {
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config.file_input = val;
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} else if (strcmp(key, "file_output") == 0) {
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config.file_output = val;
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} else if (strcmp(key, "file_info") == 0) {
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config.file_info = val;
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} else if (strcmp(key, "program") == 0) {
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config.program = val;
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} else if (strcmp(key, "help") == 0) {
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if (idx < CONFIG_INDEX_MAX)
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config[idx] = optarg;
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else if (idx == CONFIG_INDEX_MAX) {
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print_help(argv[0]);
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exit(0);
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}
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}
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char **cfg = (char **)&config;
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for (int i = 0; i < 10; i++) {
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if (!cfg[i]) {
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for (int i = 0; i < CONFIG_INDEX_MAX; i++) {
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if (!config[i]) {
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print_help(argv[0]);
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LOG_ERR("Missing arguments");
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exit(ERR_ARGUMENTS);
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@ -103,44 +84,44 @@ void parse(int argc, char *argv[]) {
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}
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void launch_child() {
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char *args[] = {config.program, NULL};
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char *args[] = {config[program], NULL};
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char *env[7];
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{
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env[0] = malloc(sizeof("LD_PRELOAD=") + strlen(config.sandbox_path) + 1);
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sprintf(env[0], "LD_PRELOAD=%s", config.sandbox_path);
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/* build env */ {
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env[0] = malloc(sizeof("LD_PRELOAD=") + strlen(config[sandbox_path]) + 1);
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sprintf(env[0], "LD_PRELOAD=%s", config[sandbox_path]);
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env[1] = malloc(sizeof(LIMIT_MEMORY "=") + strlen(config.memory_limit) + 1);
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sprintf(env[1], LIMIT_MEMORY "=%s", config.memory_limit);
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env[1] = malloc(sizeof(LIMIT_MEMORY "=") + strlen(config[memory_limit]) + 1);
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sprintf(env[1], LIMIT_MEMORY "=%s", config[memory_limit]);
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env[2] = malloc(sizeof(LIMIT_NPROC "=") + strlen(config.nproc_limit) + 1);
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sprintf(env[2], LIMIT_NPROC "=%s", config.nproc_limit);
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env[2] = malloc(sizeof(LIMIT_NPROC "=") + strlen(config[nproc_limit]) + 1);
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sprintf(env[2], LIMIT_NPROC "=%s", config[nproc_limit]);
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env[3] = malloc(sizeof(LIMIT_TIME "=") + strlen(config.time_limit) + 1);
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sprintf(env[3], LIMIT_TIME "=%s", config.time_limit);
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env[3] = malloc(sizeof(LIMIT_TIME "=") + strlen(config[time_limit]) + 1);
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sprintf(env[3], LIMIT_TIME "=%s", config[time_limit]);
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env[4] = malloc(sizeof(SANDBOX_TEMPLATE "=") + strlen(config.sandbox_template) + 1);
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sprintf(env[4], SANDBOX_TEMPLATE "=%s", config.sandbox_template);
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env[4] = malloc(sizeof(SANDBOX_TEMPLATE "=") + strlen(config[sandbox_template]) + 1);
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sprintf(env[4], SANDBOX_TEMPLATE "=%s", config[sandbox_template]);
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env[5] = malloc(sizeof(SANDBOX_ACTION "=") + strlen(config.sandbox_action) + 1);
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sprintf(env[5], SANDBOX_ACTION "=%s", config.sandbox_action);
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env[5] = malloc(sizeof(SANDBOX_ACTION "=") + strlen(config[sandbox_action]) + 1);
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sprintf(env[5], SANDBOX_ACTION "=%s", config[sandbox_action]);
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env[6] = NULL;
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}
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{
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int fd = open(config.file_input, O_RDONLY);
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/* build stdin */ {
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int fd = open(config[file_input], O_RDONLY);
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dup2(fd, STDIN_FILENO);
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close(fd);
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}
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{
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int fd = open(config.file_output, O_WRONLY | O_CREAT, 0644);
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/* build stdout */ {
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int fd = open(config[file_output], O_WRONLY | O_CREAT, 0644);
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dup2(fd, STDOUT_FILENO);
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close(fd);
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}
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execve(config.program, args, env);
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execve(config[program], args, env);
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}
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void dump_info(FILE *dest, struct rusage *usage, int status, long long time_usage) {
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@ -174,7 +155,7 @@ int main(int argc, char *argv[]) {
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exit(ERR_FORK);
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} else if (killer == 0) { // Killer
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long limit = (strtol(config.time_limit, NULL, 10) + 1000) / 1000 + 2;
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long limit = (strtol(config[time_limit], NULL, 10) + 1000) / 1000 + 2;
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LOG_INFO("Killer started, time limit: %lds", limit);
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sleep(limit); // two more seconds
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LOG_WARN("Killer killed child");
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@ -201,7 +182,7 @@ int main(int argc, char *argv[]) {
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exit(ERR_WAIT);
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}
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FILE *info = fopen(config.file_info, "w");
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FILE *info = fopen(config[file_info], "w");
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dump_info(info, &usage, status, time_usage);
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exit(0);
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}
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