diff options
Diffstat (limited to 'parsehdlist.c')
| -rw-r--r-- | parsehdlist.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/parsehdlist.c b/parsehdlist.c index f896d92..16e5c5d 100644 --- a/parsehdlist.c +++ b/parsehdlist.c @@ -214,9 +214,50 @@ int main(int argc, char **argv) close(fdno[0]); close(fdno[1]); } else { +#if 1 + int fda, fdn; + struct { + char header[4]; + char toc_d_count[4]; + char toc_l_count[4]; + char toc_f_count[4]; + char toc_str_size[4]; + char uncompress[40]; + char trailer[4]; + } buf; + char *unpacker[21]; /* enough for 40 bytes above to never overbuf */ + char *p = buf.uncompress; + int ip = 0; + + dup2(fdno[1], STDOUT_FILENO); + fda = open(argv[i], O_RDONLY); + if (fda < 0) { perror("parsehdlist"); exit(1); } + lseek(fda, -sizeof(buf), SEEK_END); + if (read(fda, &buf, sizeof(buf)) != sizeof(buf) || + strncmp(buf.header, "cz[0", 4) || + strncmp(buf.trailer, "0]cz", 4)) { + fprintf(stderr, "parsehdlist: invalid archive %s\n", argv[i]); + exit(1); + } + buf.trailer[0] = 0; /* make sure end-of-string is right */ + while (*p) { + if (*p == ' ' || *p == '\t') *p++ = 0; + else { + unpacker[ip++] = p; + while (*p && *p != ' ' && *p != '\t') ++p; + } + } + unpacker[ip] = NULL; /* needed for execlp */ + + lseek(fda, 0, SEEK_SET); + dup2(fda, STDIN_FILENO); + fdn = open("/dev/null", O_WRONLY); + dup2(fdn, STDERR_FILENO); + execvp(unpacker[0], unpacker); +#else dup2(fdno[1], STDOUT_FILENO); - execl("/usr/bin/packdrake", "/usr/bin/packdrake", "-c", argv[i], NULL); - perror("packdrake: unable to run packdrake"); + execlp("packdrake", "packdrake", "-c", argv[i], NULL); +#endif exit(2); } } else { |