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- #include "libbb.h"
- #if ENABLE_UUDECODE
- static void FAST_FUNC read_stduu(FILE *src_stream, FILE *dst_stream, int flags UNUSED_PARAM)
- {
- char *line;
- while ((line = xmalloc_fgetline(src_stream)) != NULL) {
- int encoded_len, str_len;
- char *line_ptr, *dst;
- if (strcmp(line, "end") == 0) {
- return;
- }
- line_ptr = line;
- while (*line_ptr) {
- *line_ptr = (*line_ptr - 0x20) & 0x3f;
- line_ptr++;
- }
- str_len = line_ptr - line;
- encoded_len = line[0] * 4 / 3;
-
- if (str_len <= encoded_len) {
- break;
- }
- if (encoded_len <= 0) {
-
- free(line);
- continue;
- }
- if (encoded_len > 60) {
- bb_error_msg_and_die("line too long");
- }
- dst = line;
- line_ptr = line + 1;
- do {
-
- *dst++ = line_ptr[0] << 2 | line_ptr[1] >> 4;
- encoded_len--;
- if (encoded_len == 0) {
- break;
- }
- *dst++ = line_ptr[1] << 4 | line_ptr[2] >> 2;
- encoded_len--;
- if (encoded_len == 0) {
- break;
- }
- *dst++ = line_ptr[2] << 6 | line_ptr[3];
- line_ptr += 4;
- encoded_len -= 2;
- } while (encoded_len > 0);
- fwrite(line, 1, dst - line, dst_stream);
- free(line);
- }
- bb_error_msg_and_die("short file");
- }
- #endif
- #if ENABLE_UUDECODE
- int uudecode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
- int uudecode_main(int argc UNUSED_PARAM, char **argv)
- {
- FILE *src_stream;
- char *outname = NULL;
- char *line;
- opt_complementary = "?1";
- getopt32(argv, "o:", &outname);
- argv += optind;
- if (!argv[0])
- *--argv = (char*)"-";
- src_stream = xfopen_stdin(argv[0]);
-
- while ((line = xmalloc_fgetline(src_stream)) != NULL) {
- void FAST_FUNC (*decode_fn_ptr)(FILE *src, FILE *dst, int flags);
- char *line_ptr;
- FILE *dst_stream;
- int mode;
- if (strncmp(line, "begin-base64 ", 13) == 0) {
- line_ptr = line + 13;
- decode_fn_ptr = read_base64;
- } else if (strncmp(line, "begin ", 6) == 0) {
- line_ptr = line + 6;
- decode_fn_ptr = read_stduu;
- } else {
- free(line);
- continue;
- }
-
- mode = bb_strtou(line_ptr, NULL, 8);
- if (outname == NULL) {
- outname = strchr(line_ptr, ' ');
- if (!outname)
- break;
- outname++;
- if (!outname[0])
- break;
- }
- dst_stream = stdout;
- if (NOT_LONE_DASH(outname)) {
- dst_stream = xfopen_for_write(outname);
- fchmod(fileno(dst_stream), mode & (S_IRWXU | S_IRWXG | S_IRWXO));
- }
- free(line);
- decode_fn_ptr(src_stream, dst_stream, BASE64_FLAG_UU_STOP + BASE64_FLAG_NO_STOP_CHAR);
-
- return EXIT_SUCCESS;
- }
- bb_error_msg_and_die("no 'begin' line");
- }
- #endif
- #if ENABLE_BASE64
- int base64_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
- int base64_main(int argc UNUSED_PARAM, char **argv)
- {
- FILE *src_stream;
- unsigned opts;
- opt_complementary = "?1";
- opts = getopt32(argv, "d");
- argv += optind;
- if (!argv[0])
- *--argv = (char*)"-";
- src_stream = xfopen_stdin(argv[0]);
- if (opts) {
- read_base64(src_stream, stdout, (char)EOF);
- } else {
- enum {
- SRC_BUF_SIZE = 76/4*3,
- DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
- };
- char src_buf[SRC_BUF_SIZE];
- char dst_buf[DST_BUF_SIZE + 1];
- int src_fd = fileno(src_stream);
- while (1) {
- size_t size = full_read(src_fd, src_buf, SRC_BUF_SIZE);
- if (!size)
- break;
- if ((ssize_t)size < 0)
- bb_perror_msg_and_die(bb_msg_read_error);
-
- bb_uuencode(dst_buf, src_buf, size, bb_uuenc_tbl_base64);
- xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
- bb_putchar('\n');
- fflush(stdout);
- }
- }
- fflush_stdout_and_exit(EXIT_SUCCESS);
- }
- #endif
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