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1 /* muinc.c - mmdf to uucp inc */
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2 #ifndef lint
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3 static char Id[] = "@(#)$Id$";
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4 #endif
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5
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6 #include "mf.h"
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7 #include <stdio.h>
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8 #include "../mts/mts.h"
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9 #include <errno.h>
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10 #include <sys/types.h>
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11 #include <sys/stat.h>
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12
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13
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14 static int mmdf = NOTOK;
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15 static int uucp = NOTOK;
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16 static char mmdfbox[LINESIZ];
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17 static char uucpbox[LINESIZ];
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18
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19 /* */
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20
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21 main (argc, argv)
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22 int argc;
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23 char *argv[];
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24 {
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25 int fd,
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26 tmp;
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27 struct stat st1,
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28 st2;
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29
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30 mts_init (*argv);
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31 sprintf (mmdfbox, "%s/%s", MAILDIR, MAILFIL);
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32 if (stat (mmdfbox, &st1) == NOTOK || st1.st_size == 0L)
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33 exit (0);
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34 if ((mmdf = lkopen (mmdfbox, 0)) == NOTOK)
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35 die ("unable to lock and open %s", mmdfbox);
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36 tmp = tmp_open (&fd);
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37
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38 switch (fd = mmdf2uucp (mmdf, fd, FALSE)) {
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39 case MFOK:
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40 break;
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41
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42 case MFPRM:
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43 die ("internal error while filtering MMDF mail");
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44
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45 case MFSIO:
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46 die ("no free file pointers -- you lose");
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47
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48 case MFERR:
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49 die ("i/o error while filtering MMDF mail");
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50
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51 case MFROM:
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52 case MFHDR:
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53 case MFTXT:
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54 fprintf (stderr, "MMDF mailbox in bad format, patched...\n");
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55 break;
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56 }
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57
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58 sprintf (uucpbox, "%s/%s", UUCPDIR, UUCPFIL);
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59 uucp = mbx_open (uucpbox);
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60 mbx_copy (tmp, uucp);
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61 close (tmp);
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62 lkclose (uucp, uucpbox), uucp = NOTOK;
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63
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64 if (stat (mmdfbox, &st2) != NOTOK && st1.st_mtime != st2.st_mtime)
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65 fprintf (stderr, "MMDF mailbox has been updated... (%s)\n",
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66 "so it won't be zero'd");
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67 else
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68 if ((fd = creat (mmdfbox, st1.st_mode & ~S_IFMT)) != NOTOK)
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69 close (fd);
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70 else
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71 fprintf (stderr, "unable to zero MMDF mailbox\n");
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72 lkclose (mmdf, mmdfbox), mmdf = NOTOK;
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73
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74 exit (0);
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75 }
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76
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77 /* */
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78
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79 static int mbx_open (file)
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80 char *file;
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81 {
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82 int count,
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83 fd;
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84
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85 for (count = 2; count > 0; count--)
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86 if ((fd = lkopen (file, 1)) == NOTOK)
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87 switch (errno) {
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88 case ENOENT:
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89 mbx_create (file);
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90 break;
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91 case ETXTBSY:
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92 sleep (5);
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93 break;
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94 default:
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95 goto openerr;
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96 }
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97
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98 if (fd == NOTOK) {
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99 openerr:
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100 if (errno == ETXTBSY)
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101 die ("your UUCP mailbox '%s' is busy", file);
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102 else
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103 die ("unable to open UUCP mailbox '%s'", file);
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104 }
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105
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106 lseek (fd, (off_t)0, 2);
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107
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108 return fd;
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109 }
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110
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111 /* */
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112
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113 static mbx_create (file)
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114 char *file;
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115 {
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116 int fd;
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117
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118 if ((fd = creat (file, MBXMODE)) == NOTOK)
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119 die ("unable to create UUCP mailbox '%s'", file);
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120
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121 close (fd);
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122 }
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123
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124 /* */
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125
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126 static mbx_copy (in, out)
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127 int in,
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128 out;
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129 {
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130 int i;
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131 char buffer[BUFSIZ];
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132
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133 lseek (in, (off_t)0, 0);
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134
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135 while ((i = read (in, buffer, sizeof buffer)) > 0)
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136 if (write (out, buffer, i) != i)
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137 die ("error writing UUCP mailbox");
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138 if (i < 0)
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139 die ("error reading temporary file");
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140 }
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141
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142 /* */
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143
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144 static int tmp_open (mbx_fd)
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145 int *mbx_fd;
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146 {
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147 int fd;
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148 char tmpfil[LINESIZ];
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149
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150 strcpy (tmpfil, "/tmp/muincXXXXXX");
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151 unlink (mktemp (tmpfil));
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152 if ((fd = creat (tmpfil, TMPMODE)) == NOTOK)
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153 die ("unable to create temporary file '%s'", tmpfil);
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154 close (fd);
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155
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156 if ((fd = open (tmpfil, 2)) == NOTOK)
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157 die ("unable to create temporary file '%s'", tmpfil);
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158 unlink (tmpfil);
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159
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160 if ((*mbx_fd = dup (fd)) == NOTOK)
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161 die ("unable to duplicate fd for temporary file '%s'", tmpfil);
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162
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163 return fd;
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164 }
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165
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166 /* */
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167
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168 static die (fmt, a, b, c, d)
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169 char *fmt,
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170 *a,
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171 *b,
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172 *c,
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173 *d;
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174 {
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175 lkclose (mmdf, mmdfbox), mmdf = NOTOK;
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176 lkclose (uucp, uucpbox), uucp = NOTOK;
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177
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178 fflush (stdout);
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179 fprintf (stderr, fmt, a, b, c, d);
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180 putc ('\n', stderr);
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181
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182 exit (1);
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183 }
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