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#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/wait.h>
#include <sys/fcntl.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <sys/socket.h>
#include <time.h>
#include <sys/time.h>
unsigned char pklhead[] = {
0x50, 0x4b, 0x03, 0x04, 0x14, 0x00, 0x02, 0x00,
0x08, 0x00,
// time, date next line, offset 10
0x86, 0x6b, 0xa8, 0x36,
0xf3, 0x46, 0x80, 0x25, 0xe3, 0x00, 0x00, 0x00,
0x59, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
unsigned char pkchead[] = {
0x50, 0x4b, 0x01, 0x02, 0x14, 0x00, 0x14, 0x00,
0x02, 0x00, 0x08, 0x00,
// time, date next line, offset 12
0x86, 0x6b, 0xa8, 0x36,
0xf3, 0x46, 0x80, 0x25, 0xe3, 0x00, 0x00, 0x00,
0x59, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
unsigned char pkcend[] = {
0x50, 0x4b, 0x05, 0x06, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x01, 0x00, 0x48, 0x00, 0x00, 0x00,
0x23, 0x01, 0x00, 0x00, 0x00, 0x00
};
#define BUFMAX (16384)
unsigned char obuf[BUFMAX];
char fname[256];
char tname[256];
int main(int argc, char *argv[])
{
pid_t pid;
int pipeto[2]; /* pipe to feed the exec'ed program input */
int pipefrom[2]; /* pipe to get the exec'ed program output */
int olen, status;
int otot = 0;
int ifd, ofd;
char *c, *d;
if (argc != 2)
return -1;
{
unsigned int bitbuf;
struct timeval tv;
struct tm *tmpt;
gettimeofday(&tv, NULL);
tmpt = localtime(&tv.tv_sec);
/*
DOS stores file modification times and dates as a pair of 16-bit numbers:
* 7 bits of year, 4 bits of month, 5 bits of day of month
* 5 bits of hour, 6 bits of minute, 5 bits of seconds (x2).
*/
bitbuf = tmpt->tm_sec / 2;
bitbuf |= tmpt->tm_min << 5;
bitbuf |= tmpt->tm_hour << 11;
pklhead[10] = pkchead[12] = bitbuf & 255;
pklhead[11] = pkchead[13] = bitbuf >> 8;
bitbuf = tmpt->tm_mday;
bitbuf |= (1 + tmpt->tm_mon) << 5;
bitbuf |= (tmpt->tm_year - 80) << 9;
pklhead[12] = pkchead[14] = bitbuf & 255;
pklhead[13] = pkchead[15] = bitbuf >> 8;
}
nice(15);
strcpy(fname, argv[1]);
ifd = open(argv[1], O_RDONLY);
if (ifd < 0)
return -2;
strcpy(tname, fname);
if ((c = strstr(tname, ".kml")))
*c = 0;
strcat(tname, ".kmt");
ofd = creat(tname, 0644);
strcpy( (char *) obuf, fname);
d = (char *) obuf;
// strip leading path
while ((c = strstr(d, "/")))
d = ++c;
strcpy(fname, d);
write(ofd, pklhead, sizeof(pklhead));
write(ofd, fname, strlen(fname));
pklhead[26] = strlen(fname);
pkchead[28] = strlen(fname);
pkcend[12] = strlen(fname) + sizeof(pkchead);
pipe(pipeto);
pipe(pipefrom);
pid = fork();
if (!pid) {
dup2(pipeto[0], STDIN_FILENO);
dup2(pipefrom[1], STDOUT_FILENO);
close(pipeto[0]);
close(pipeto[1]);
close(pipefrom[0]);
close(pipefrom[1]);
execlp("/bin/gzip", "gzip", "-9", NULL);
exit(-1);
}
close(pipeto[0]);
close(pipefrom[1]);
if (!fork()) {
close(pipefrom[0]);
for (;;) { // send infile to pipe, then exit
olen = read(ifd, obuf, BUFMAX);
// fprintf(stderr, "read %d\n", olen);
if (olen > 0)
write(pipeto[1], obuf, olen);
if (olen != BUFMAX) {
close(ifd);
close(pipeto[1]);
return 0;
}
}
}
close(pipeto[1]);
read(pipefrom[0], obuf, 10); // zap header
read(pipefrom[0], obuf, 8); // stay 8 behind to capture tail
for (;;) {
olen = read(pipefrom[0], &obuf[8], BUFMAX - 8);
// fprintf(stderr, "zreade %d\n", olen);
if (olen <= 0)
break;
otot += olen;
write(ofd, obuf, olen);
memcpy(obuf, &obuf[olen], 8);
}
close(pipefrom[0]);
waitpid(-1, &status, WNOHANG);
memcpy(&pklhead[22], &obuf[4], 4);
memcpy(&pklhead[14], &obuf[0], 4);
pklhead[18] = otot;
pklhead[19] = otot >> 8;
pklhead[20] = otot >> 16;
pklhead[21] = otot >> 24;
memcpy(&pkchead[6], &pklhead[4], 26);
write(ofd, pkchead, sizeof(pkchead));
write(ofd, fname, strlen(fname));
// offset to CD
otot += sizeof(pklhead);
otot += strlen(fname);
pkcend[16] = otot;
pkcend[17] = otot >> 8;
pkcend[18] = otot >> 16;
pkcend[19] = otot >> 24;
write(ofd, pkcend, sizeof(pkcend));
lseek(ofd, 0, SEEK_SET);
write(ofd, pklhead, sizeof(pklhead));
close(ofd);
strcpy(fname, tname);
fname[strlen(fname) - 1] = 'z';
rename(tname, fname); // rename kmt to kmz
// first insure success, then
unlink(argv[1]);
return 0;
}
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