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#include <stdio.h>
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/mman.h>
#include "pack.h"
#include "util_rt.h"
#define USE_MMAP 1
static void report_pack_ret (const prne_pack_ret_t pr) {
char *str = prne_pack_ret_tostr(pr);
fprintf(stderr, "%s\n", str);
prne_free(str);
}
int main (const int argc, const char **args) {
int exit_code = 0;
const char *path_prefix;
size_t path_prefix_len;
prne_stdin_base64_rf_ctx_t rf_ctx;
prne_bin_archive_t bin_archive;
prne_pack_ret_t pr;
size_t i;
const char *arch_str;
char *path = NULL;
size_t path_size;
void *ny_buf;
int fd = -1;
prne_unpack_ctx_pt unpack_ctx = NULL;
#if USE_MMAP
void *addr = NULL;
#else
uint8_t write_buf[512];
ssize_t write_len;
#endif
if (argc <= 1) {
fprintf(stderr, "Usage: %s <prefix>\n", args[0]);
return 2;
}
path_prefix = args[1];
path_prefix_len = strlen(path_prefix);
prne_init_bin_archive(&bin_archive);
prne_init_stdin_base64_rf_ctx(&rf_ctx);
pr = prne_index_bin_archive(&rf_ctx, prne_stdin_base64_rf, &bin_archive);
if (pr.rc != PRNE_PACK_RC_OK) {
report_pack_ret(pr);
exit_code = 1;
goto END;
}
for (i = 0; i < bin_archive.nb_bin; i += 1) {
arch_str = prne_arch_tostr(bin_archive.bin[i].arch);
if (arch_str == NULL) {
fprintf(stderr, "** unrecognised arch!");
exit_code = 1;
goto END;
}
unpack_ctx = prne_alloc_unpack_ctx(&bin_archive, bin_archive.bin[i].arch, &pr);
if (unpack_ctx == NULL) {
report_pack_ret(pr);
exit_code = 1;
goto END;
}
path_size = 2 + path_prefix_len + strlen(arch_str);
ny_buf = prne_realloc(path, 1, path_size);
if (ny_buf == NULL) {
perror("prne_realloc()");
exit_code = 1;
goto END;
}
path = (char*)ny_buf;
if (sprintf(path, "%s.%s", path_prefix, arch_str) < 0) {
perror("sprintf()");
exit_code = 1;
goto END;
}
fd = open(path, O_CREAT | O_RDWR | O_TRUNC, 0666);
if (fd < 0) {
perror("open()");
exit_code = 1;
goto END;
}
#if USE_MMAP
if (ftruncate(fd, bin_archive.bin[i].size) != 0) {
perror("ftruncate()");
exit_code = 1;
goto END;
}
addr = mmap(NULL, bin_archive.bin[i].size, PROT_WRITE, MAP_SHARED, fd, 0);
if (addr == MAP_FAILED) {
perror("mmap()");
exit_code = 1;
goto END;
}
if (prne_do_unpack(unpack_ctx, (uint8_t*)addr, bin_archive.bin[i].size, &pr) != (ssize_t)bin_archive.bin[i].size) {
report_pack_ret(pr);
exit_code = 1;
goto END;
}
munmap(addr, bin_archive.bin[i].size);
addr = NULL;
#else
do {
write_len = prne_do_unpack(unpack_ctx, write_buf, sizeof(write_buf), &pr);
if (write_len < 0) {
report_pack_ret(pr);
exit_code = 1;
goto END;
}
write(fd, write_buf, (size_t)write_len);
} while (write_len != 0);
#endif
prne_free_unpack_ctx(unpack_ctx);
unpack_ctx = NULL;
prne_close(fd);
fd = -1;
}
END:
#if USE_MMAP
if (addr != NULL) {
munmap(addr, bin_archive.bin[i].size);
}
#endif
prne_free_unpack_ctx(unpack_ctx);
prne_free(path);
prne_close(fd);
prne_free_bin_archive(&bin_archive);
prne_free_stdin_base64_rf_ctx(&rf_ctx);
return exit_code;
}
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