Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/master/ssl-init-main.c @ 7086:7ed926ed7aa4 HEAD

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Updated copyright notices to include year 2008.
author Timo Sirainen <tss@iki.fi>
date Tue, 01 Jan 2008 22:05:21 +0200
parents 65c69a53a7be
children b9faf4db2a9f
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7086
7ed926ed7aa4 Updated copyright notices to include year 2008.
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1 /* Copyright (c) 2006-2008 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "lib-signals.h"
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5 #include "file-lock.h"
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6 #include "randgen.h"
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7 #include "ssl-init.h"
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8
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9 #include <stdio.h>
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10 #include <fcntl.h>
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11 #include <unistd.h>
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12 #include <sys/stat.h>
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13
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14 #ifdef HAVE_SSL
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15 static int generate_parameters_file(const char *fname)
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16 {
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17 const char *temp_fname;
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18 struct file_lock *lock;
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19 mode_t old_mask;
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20 int fd, ret;
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21
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22 temp_fname = t_strconcat(fname, ".tmp", NULL);
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23
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24 old_mask = umask(0);
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25 fd = open(temp_fname, O_WRONLY | O_CREAT, 0644);
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26 umask(old_mask);
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27
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28 if (fd == -1) {
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29 i_fatal("Can't create temporary SSL parameters file %s: %m",
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30 temp_fname);
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31 }
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32
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33 /* If multiple dovecot instances are running, only one of them needs
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34 to regenerate this file. */
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35 ret = file_try_lock(fd, temp_fname, F_WRLCK,
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36 FILE_LOCK_METHOD_FCNTL, &lock);
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37 if (ret < 0)
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38 i_fatal("file_try_lock(%s) failed: %m", temp_fname);
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39 if (ret == 0) {
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40 /* someone else is writing this */
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41 return -1;
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42 }
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43 if (ftruncate(fd, 0) < 0)
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44 i_fatal("ftruncate(%s) failed: %m", temp_fname);
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45
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46 ssl_generate_parameters(fd, temp_fname);
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47
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48 if (rename(temp_fname, fname) < 0)
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49 i_fatal("rename(%s, %s) failed: %m", temp_fname, fname);
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50 if (close(fd) < 0)
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51 i_fatal("close(%s) failed: %m", temp_fname);
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52 file_lock_free(&lock);
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53
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54 i_info("SSL parameters regeneration completed");
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55 return 0;
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56 }
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57 #else
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58 static int generate_parameters_file(const char *fname ATTR_UNUSED)
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59 {
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60 i_fatal("Dovecot built without SSL support");
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61 return -1;
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62 }
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63 #endif
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64
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65 int main(int argc, char *argv[])
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66 {
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67 int ret = 0;
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68
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69 lib_init();
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70 i_set_failure_internal();
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71
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72 if (argc < 2)
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73 i_fatal("Usage: ssl-build-param <path>");
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74
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75 random_init();
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76 if (generate_parameters_file(argv[1]) < 0)
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77 ret = 1;
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78
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79 random_deinit();
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80 lib_deinit();
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81 return ret;
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82 }