127 lines
2.3 KiB
C
127 lines
2.3 KiB
C
#include <sys/stat.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include "dvm2.h"
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int write_all(int fd, void *buf, int size)
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{
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int written = 0;
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int ret;
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while (written < size) {
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ret = write(fd, (char *) buf + written, size - written);
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if (ret <= 0) {
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perror("write");
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return 0;
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}
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written += ret;
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}
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// fprintf(stderr, "sent %d bytes\n", size);
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return 1;
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}
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int read_all(int fd, void *buf, int size)
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{
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int got_read = 0;
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int ret;
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while (got_read < size) {
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ret = read(fd, (char *) buf + got_read, size - got_read);
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if (ret == 0) {
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fprintf(stderr, "EOF\n");
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return 0;
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}
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if (ret < 0) {
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perror("read");
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return 0;
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}
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got_read += ret;
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}
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// fprintf(stderr, "read %d bytes\n", size);
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return 1;
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}
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char *get_filename()
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{
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char buf[DVM_FILENAME_SIZE];
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static char retname[sizeof(buf) + sizeof("/tmp/")];
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if (!read_all(0, buf, sizeof(buf)))
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exit(1);
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if (index(buf, '/')) {
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fprintf(stderr, "filename contains /");
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exit(1);
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}
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snprintf(retname, sizeof(retname), "/tmp/%s", buf);
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return retname;
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}
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void copy_all(int fdout, int fdin)
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{
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int ret;
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char buf[4096];
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for (;;) {
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ret = read(fdin, buf, sizeof(buf));
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if (!ret)
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break;
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if (ret < 0) {
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perror("read");
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exit(1);
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}
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if (!write_all(fdout, buf, ret)) {
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perror("write");
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exit(1);
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}
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}
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}
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void copy_file(char *filename)
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{
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int fd = open(filename, O_WRONLY | O_CREAT, 0600);
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if (fd < 0) {
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perror("open file");
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exit(1);
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}
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copy_all(fd, 0);
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close(fd);
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}
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void send_file_back(char * filename)
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{
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int fd = open(filename, O_RDONLY);
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if (fd < 0) {
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perror("open file");
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exit(1);
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}
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copy_all(1, fd);
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close(fd);
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}
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int
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main()
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{
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char cmdbuf[512];
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struct stat stat_pre, stat_post;
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char *filename = get_filename();
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copy_file(filename);
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if (stat(filename, &stat_pre)) {
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perror("stat pre");
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exit(1);
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}
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snprintf(cmdbuf, sizeof(cmdbuf),
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"HOME=/home/user DISPLAY=:0 /usr/bin/mimeopen -n -M '%s' 2>&1 > /tmp/kde-open.log </dev/null",
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filename);
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if (system(cmdbuf))
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system
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("HOME=/home/user DISPLAY=:0 /usr/bin/kdialog --sorry 'Unable to handle mimetype of the requested file!'");
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if (stat(filename, &stat_post)) {
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perror("stat post");
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exit(1);
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}
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if (stat_pre.st_mtime != stat_post.st_mtime)
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send_file_back(filename);
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return 0;
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}
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