123 lines
2 KiB
C
123 lines
2 KiB
C
#include <u.h>
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#include <libc.h>
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#include <draw.h>
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#include <event.h>
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#include <panel.h>
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#include <ctype.h>
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#include "mothra.h"
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int
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filetype(int fd, char *typ, int ntyp)
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{
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int ifd[2], ofd[2], xfd[2], n;
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char *argv[3], buf[4096];
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typ[0] = 0;
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if((n = readn(fd, buf, sizeof(buf))) < 0)
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return -1;
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if(n == 0)
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return 0;
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if(pipe(ifd) < 0)
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return -1;
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if(pipe(ofd) < 0){
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Err1:
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close(ifd[0]);
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close(ifd[1]);
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return -1;
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}
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switch(rfork(RFFDG|RFPROC|RFNOWAIT)){
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case -1:
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close(ofd[0]);
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close(ofd[1]);
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goto Err1;
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case 0:
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dup(ifd[1], 0);
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dup(ofd[1], 1);
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close(ifd[1]);
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close(ifd[0]);
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close(ofd[1]);
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close(ofd[0]);
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close(fd);
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argv[0] = "file";
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argv[1] = "-m";
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argv[2] = 0;
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exec("/bin/file", argv);
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}
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close(ifd[1]);
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close(ofd[1]);
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if(rfork(RFFDG|RFPROC|RFNOWAIT) == 0){
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close(fd);
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close(ofd[0]);
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write(ifd[0], buf, n);
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exits(nil);
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}
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close(ifd[0]);
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if(pipe(xfd) < 0){
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close(ofd[0]);
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return -1;
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}
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switch(rfork(RFFDG|RFPROC|RFNOWAIT)){
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case -1:
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break;
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case 0:
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close(ofd[0]);
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close(xfd[0]);
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do {
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if(write(xfd[1], buf, n) != n)
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break;
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} while((n = read(fd, buf, sizeof(buf))) > 0);
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exits(nil);
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default:
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dup(xfd[0], fd);
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}
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close(xfd[0]);
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close(xfd[1]);
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if((n = readn(ofd[0], typ, ntyp-1)) < 0)
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n = 0;
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close(ofd[0]);
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while(n > 0 && typ[n-1] == '\n')
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n--;
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typ[n] = 0;
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return 0;
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}
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int
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snooptype(int fd)
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{
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static struct {
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char *typ;
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int val;
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} tab[] = {
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"text/plain", PLAIN,
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"text/html", HTML,
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"image/jpeg", JPEG,
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"image/gif", GIF,
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"image/png", PNG,
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"image/bmp", BMP,
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"image/x-icon", ICO,
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"application/pdf", PAGE,
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"application/postscript", PAGE,
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"application/ghostscript", PAGE,
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"application/troff", PAGE,
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"image/", PAGE,
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"text/", PLAIN,
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"message/rfc822", PLAIN,
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};
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char buf[128];
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int i;
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if(filetype(fd, buf, sizeof(buf)) < 0)
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return -1;
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for(i=0; i<nelem(tab); i++)
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if(strncmp(buf, tab[i].typ, strlen(tab[i].typ)) == 0)
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return tab[i].val;
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return -1;
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}
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