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#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/sendfile.h>
#include <fcntl.h>
#include "util_rt.h"
#include "util_ct.h"
#include "protocol.h"
int main (const int argc, const char **args) {
typedef struct {
prne_arch_t arch;
const char *path;
} archive_tuple_t;
size_t i;
const archive_tuple_t *encounter_arr[NB_PRNE_ARCH];
archive_tuple_t archive_arr[NB_PRNE_ARCH];
archive_tuple_t *archive;
size_t archive_arr_cnt = 0;
const char *path, *ext;
bool proc_result = true;
prne_arch_t arch;
int bin_fd = -1;
struct stat st;
uint8_t head[4];
if (argc <= 1) {
fprintf(stderr, "Usage: %s <path to binary 1> [path to binary 2 [path to binary ...]]\n", args[0]);
return 1;
}
// refuse to run if stdout is terminal
if (isatty(STDOUT_FILENO)) {
fprintf(stderr, "** Refusing to print on terminal.\n");
return 1;
}
// too many files
if (argc - 1 > NB_PRNE_ARCH) {
fprintf(stderr, "** Too many files given (%d > %d).\n", argc - 1, NB_PRNE_ARCH);
return 1;
}
// init
memzero(encounter_arr, sizeof(archive_tuple_t*) * NB_PRNE_ARCH);
memzero(archive_arr, sizeof(archive_tuple_t) * NB_PRNE_ARCH);
// Check the file names are valid
for (i = 1; i < (size_t)argc; i += 1) {
path = args[i];
ext = strrchr(path, '.');
if (ext == NULL) {
fprintf(stderr, "** %s: file extension not found\n", path);
proc_result = false;
continue;
}
ext += 1;
arch = prne_arch_fstr(ext);
if (arch == PRNE_ARCH_NONE) {
fprintf(stderr, "** %s: unknown arch \"%s\"\n", path, ext);
proc_result = false;
continue;
}
if (encounter_arr[arch] != NULL) {
fprintf(stderr, "** Duplicate arch!\n%s\n%s\n", encounter_arr[arch]->path, path);
proc_result = false;
continue;
}
archive_arr[archive_arr_cnt].arch = arch;
archive_arr[archive_arr_cnt].path = path;
encounter_arr[arch] = &archive_arr[archive_arr_cnt];
archive_arr_cnt += 1;
}
if (!proc_result) {
return 1;
}
// do packing
fprintf(stderr, archive_arr_cnt == NB_PRNE_ARCH ? "Packing %zu binaries.\n" : "* Warning: packing only %zu binaries\n", archive_arr_cnt);
for (i = 0; i < archive_arr_cnt; i += 1) {
archive = &archive_arr[i];
fprintf(stderr, "Packing: %s ...\n", archive->path);
bin_fd = open(archive->path, O_RDONLY);
if (bin_fd < 0) {
perror("** open()");
proc_result = false;
break;
}
// get size
if (fstat(bin_fd, &st) != 0) {
perror("** fstat()");
proc_result = false;
break;
}
if (st.st_size == 0) {
fprintf(stderr, "** empty file!\n");
proc_result = false;
break;
}
if (st.st_size > 0x00FFFFFE) {
fprintf(stderr, "** binary too large!\n");
proc_result = false;
break;
}
// write head
head[0] = (uint8_t)archive->arch;
// endian conversion as the file is big endian
head[1] = (uint8_t)(((uint_fast32_t)st.st_size & 0x00FF0000) >> 16);
head[2] = (uint8_t)(((uint_fast32_t)st.st_size & 0x0000FF00) >> 8);
head[3] = (uint8_t)((uint_fast32_t)st.st_size & 0x000000FF);
if (write(STDOUT_FILENO, head, 4) != 4) {
perror("write()");
proc_result = false;
break;
}
// write binary
if (sendfile(STDOUT_FILENO, bin_fd, NULL, st.st_size) < 0) {
perror("** sendfile()");
proc_result = false;
break;
}
prne_close(bin_fd);
bin_fd = -1;
}
prne_close(bin_fd);
bin_fd = -1;
errno = 0;
return proc_result ? 0 : 2;
}
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