1 | /* This file is part of the Project Athena Zephyr Notification System. |
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2 | * It contains code for the "zwrite" command. |
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3 | * |
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4 | * Created by: Robert French |
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5 | * |
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6 | * $Id: zwrite.c,v 1.49 1999-08-13 00:19:42 danw Exp $ |
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7 | * |
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8 | * Copyright (c) 1987,1988 by the Massachusetts Institute of Technology. |
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9 | * For copying and distribution information, see the file |
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10 | * "mit-copyright.h". |
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11 | */ |
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12 | |
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13 | #include <sysdep.h> |
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14 | #include <zephyr/mit-copyright.h> |
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15 | #include <zephyr/zephyr.h> |
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16 | #include <netdb.h> |
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17 | #include <pwd.h> |
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18 | |
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19 | #ifndef lint |
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20 | static const char rcsid_zwrite_c[] = "$Id: zwrite.c,v 1.49 1999-08-13 00:19:42 danw Exp $"; |
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21 | #endif /* lint */ |
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22 | |
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23 | #define DEFAULT_CLASS "MESSAGE" |
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24 | #define DEFAULT_INSTANCE "PERSONAL" |
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25 | #define URGENT_INSTANCE "URGENT" |
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26 | #define DEFAULT_OPCODE "" |
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27 | #define FILSRV_CLASS "FILSRV" |
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28 | |
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29 | #define MAXRECIPS 100 |
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30 | |
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31 | int nrecips, msgarg, verbose, quiet, nodot, cc; |
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32 | char *whoami, *inst, *class, *opcode, *realm, *recips[MAXRECIPS]; |
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33 | Z_AuthProc auth; |
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34 | void un_tabify(); |
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35 | |
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36 | char *fix_filsrv_inst(); |
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37 | void usage(), send_off(); |
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38 | |
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39 | main(argc, argv) |
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40 | int argc; |
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41 | char *argv[]; |
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42 | { |
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43 | int retval, arg, nocheck, nchars, msgsize, filsys, tabexpand; |
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44 | char *message, *signature = NULL, *format = NULL; |
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45 | static char bfr[BUFSIZ], classbfr[BUFSIZ], instbfr[BUFSIZ], sigbfr[BUFSIZ]; |
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46 | static char opbfr[BUFSIZ]; |
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47 | static ZNotice_t notice; |
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48 | |
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49 | whoami = argv[0]; |
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50 | |
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51 | if ((retval = ZInitialize()) != ZERR_NONE) { |
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52 | com_err(whoami, retval, "while initializing"); |
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53 | exit(1); |
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54 | } |
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55 | |
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56 | if (argc < 2) |
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57 | usage(whoami); |
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58 | |
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59 | auth = ZAUTH; |
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60 | verbose = quiet = msgarg = nrecips = nocheck = filsys = nodot = 0; |
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61 | tabexpand = 1; |
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62 | |
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63 | if (class = ZGetVariable("zwrite-class")) { |
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64 | (void) strcpy(classbfr, class); |
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65 | class = classbfr; |
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66 | } |
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67 | else |
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68 | class = DEFAULT_CLASS; |
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69 | if (inst = ZGetVariable("zwrite-inst")) { |
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70 | (void) strcpy(instbfr, inst); |
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71 | inst = instbfr; |
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72 | } |
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73 | else |
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74 | inst = DEFAULT_INSTANCE; |
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75 | |
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76 | if (opcode = ZGetVariable("zwrite-opcode")) |
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77 | opcode = strcpy(opbfr, opcode); |
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78 | else |
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79 | opcode = DEFAULT_OPCODE; |
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80 | |
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81 | signature = ZGetVariable("zwrite-signature"); |
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82 | if (signature) { |
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83 | (void) strcpy(sigbfr, signature); |
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84 | signature = sigbfr; |
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85 | } |
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86 | |
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87 | arg = 1; |
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88 | |
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89 | for (;arg<argc&&!msgarg;arg++) { |
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90 | if (*argv[arg] != '-') { |
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91 | recips[nrecips++] = argv[arg]; |
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92 | continue; |
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93 | } |
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94 | if (strlen(argv[arg]) > 2) |
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95 | usage(whoami); |
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96 | switch (argv[arg][1]) { |
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97 | case 'a': /* Backwards compatibility */ |
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98 | auth = ZAUTH; |
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99 | break; |
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100 | case 'o': |
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101 | class = DEFAULT_CLASS; |
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102 | inst = DEFAULT_INSTANCE; |
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103 | opcode = DEFAULT_OPCODE; |
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104 | break; |
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105 | case 'd': |
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106 | auth = ZNOAUTH; |
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107 | break; |
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108 | case 'v': |
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109 | verbose = 1; |
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110 | break; |
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111 | case 'q': |
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112 | quiet = 1; |
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113 | break; |
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114 | case 'n': |
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115 | nocheck = 1; |
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116 | break; |
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117 | case 't': |
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118 | tabexpand = 0; |
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119 | break; |
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120 | case 'u': |
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121 | inst = URGENT_INSTANCE; |
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122 | break; |
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123 | case 'O': |
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124 | if (arg == argc-1) |
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125 | usage(whoami); |
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126 | arg++; |
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127 | opcode = argv[arg]; |
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128 | break; |
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129 | case 'i': |
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130 | if (arg == argc-1 || filsys == 1) |
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131 | usage(whoami); |
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132 | arg++; |
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133 | inst = argv[arg]; |
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134 | filsys = -1; |
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135 | break; |
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136 | case 'c': |
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137 | if (arg == argc-1 || filsys == 1) |
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138 | usage(whoami); |
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139 | arg++; |
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140 | class = argv[arg]; |
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141 | filsys = -1; |
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142 | break; |
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143 | case 'f': |
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144 | if (arg == argc-1 || filsys == -1) |
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145 | usage(whoami); |
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146 | arg++; |
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147 | class = FILSRV_CLASS; |
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148 | inst = fix_filsrv_inst(argv[arg]); |
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149 | filsys = 1; |
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150 | nocheck = 1; /* implied -n (no ping) */ |
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151 | break; |
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152 | case 's': |
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153 | if (arg == argc-1) |
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154 | usage(whoami); |
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155 | arg++; |
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156 | signature = argv[arg]; |
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157 | break; |
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158 | case 'm': |
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159 | if (arg == argc-1) |
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160 | usage(whoami); |
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161 | nocheck = 1; /* implied -n (no ping) */ |
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162 | msgarg = arg+1; |
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163 | break; |
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164 | case 'l': /* literal */ |
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165 | nodot = 1; |
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166 | break; |
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167 | case 'F': |
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168 | if (arg == argc-1) |
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169 | usage(whoami); |
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170 | arg++; |
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171 | format = argv[arg]; |
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172 | break; |
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173 | case 'r': |
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174 | if (arg == argc-1) |
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175 | usage(whoami); |
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176 | arg++; |
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177 | realm = argv[arg]; |
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178 | break; |
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179 | case 'C': |
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180 | cc = 1; |
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181 | break; |
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182 | default: |
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183 | usage(whoami); |
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184 | } |
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185 | } |
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186 | |
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187 | if (!nrecips && !(strcmp(class, DEFAULT_CLASS) || |
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188 | (strcmp(inst, DEFAULT_INSTANCE) && |
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189 | strcmp(inst, URGENT_INSTANCE)))) { |
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190 | /* must specify recipient if using default class and |
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191 | (default instance or urgent instance) */ |
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192 | fprintf(stderr, "No recipients specified.\n"); |
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193 | usage(whoami); |
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194 | } |
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195 | |
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196 | if (!signature) { |
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197 | /* try to find name in the password file */ |
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198 | register struct passwd *pwd; |
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199 | register char *cp = sigbfr; |
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200 | register char *cp2, *pp; |
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201 | |
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202 | pwd = getpwuid(getuid()); |
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203 | if (pwd) { |
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204 | cp2 = pwd->pw_gecos; |
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205 | for (; *cp2 && *cp2 != ',' ; cp2++) { |
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206 | if (*cp2 == '&') { |
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207 | pp = pwd->pw_name; |
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208 | *cp++ = islower(*pp) ? toupper(*pp) : *pp; |
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209 | pp++; |
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210 | while (*pp) |
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211 | *cp++ = *pp++; |
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212 | } else |
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213 | *cp++ = *cp2; |
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214 | } |
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215 | signature = sigbfr; |
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216 | } |
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217 | } |
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218 | |
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219 | notice.z_kind = ACKED; |
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220 | notice.z_port = 0; |
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221 | notice.z_class = class; |
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222 | notice.z_class_inst = inst; |
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223 | notice.z_opcode = "PING"; |
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224 | notice.z_sender = 0; |
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225 | notice.z_message_len = 0; |
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226 | notice.z_recipient = ""; |
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227 | if (format) |
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228 | notice.z_default_format = format; |
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229 | else if (filsys == 1) |
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230 | notice.z_default_format = "@bold(Filesystem Operation Message for $instance:)\nFrom: @bold($sender) at $time $date\n$message"; |
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231 | else if (auth == ZAUTH) { |
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232 | if (signature) |
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233 | notice.z_default_format = "Class $class, Instance $instance:\nTo: @bold($recipient) at $time $date\nFrom: @bold($1) <$sender>\n\n$2"; |
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234 | else |
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235 | notice.z_default_format = "Class $class, Instance $instance:\nTo: @bold($recipient) at $time $date\n$message"; |
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236 | } else { |
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237 | if (signature) |
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238 | notice.z_default_format = "@bold(UNAUTHENTIC) Class $class, Instance $instance at $time $date:\nFrom: @bold($1) <$sender>\n\n$2"; |
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239 | else |
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240 | notice.z_default_format = "@bold(UNAUTHENTIC) Class $class, Instance $instance at $time $date:\n$message"; |
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241 | } |
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242 | if (!nocheck && nrecips) |
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243 | send_off(¬ice, 0); |
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244 | |
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245 | if (!msgarg && isatty(0)) |
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246 | if (nodot) |
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247 | printf("Type your message now. End with the end-of-file character.\n"); |
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248 | else |
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249 | printf("Type your message now. End with control-D or a dot on a line by itself.\n"); |
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250 | |
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251 | message = NULL; |
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252 | msgsize = 0; |
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253 | if (signature) { |
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254 | message = malloc((unsigned)(strlen(signature)+2)); |
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255 | (void) strcpy(message, signature); |
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256 | msgsize = strlen(message); |
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257 | message[msgsize++] = '\0'; |
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258 | } else { |
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259 | message = malloc(1); |
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260 | message[msgsize++] = '\0'; |
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261 | } |
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262 | |
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263 | if (cc && nrecips > 1) { |
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264 | int size = msgsize; |
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265 | for (arg=0;arg<nrecips;arg++) |
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266 | size += (strlen(recips[arg]) + 2); |
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267 | size += 6; /* for the newlines and "cc: " */ |
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268 | message = realloc(message, (unsigned) size); |
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269 | (void) strcpy(message+msgsize, "CC: "); |
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270 | msgsize += 4; |
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271 | for (arg=0;arg<nrecips;arg++) { |
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272 | (void) strcpy(message+msgsize, recips[arg]); |
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273 | msgsize += strlen(recips[arg]); |
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274 | if (arg != nrecips-1) { |
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275 | message[msgsize] = ' '; |
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276 | msgsize++; |
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277 | } |
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278 | } |
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279 | message[msgsize] = '\n'; |
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280 | msgsize += 1; |
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281 | } |
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282 | |
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283 | if (msgarg) { |
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284 | int size = msgsize; |
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285 | for (arg=msgarg;arg<argc;arg++) |
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286 | size += (strlen(argv[arg]) + 1); |
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287 | size++; /* for the newline */ |
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288 | message = realloc(message, (unsigned) size); |
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289 | for (arg=msgarg;arg<argc;arg++) { |
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290 | (void) strcpy(message+msgsize, argv[arg]); |
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291 | msgsize += strlen(argv[arg]); |
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292 | if (arg != argc-1) { |
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293 | message[msgsize] = ' '; |
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294 | msgsize++; |
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295 | } |
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296 | } |
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297 | message[msgsize] = '\n'; |
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298 | msgsize += 1; |
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299 | } else { |
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300 | if (isatty(0)) { |
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301 | for (;;) { |
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302 | unsigned int l; |
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303 | if (!fgets(bfr, sizeof bfr, stdin)) |
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304 | break; |
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305 | if (!nodot && bfr[0] == '.' && |
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306 | (bfr[1] == '\n' || bfr[1] == '\0')) |
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307 | break; |
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308 | l = strlen(bfr); |
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309 | message = realloc(message, msgsize+l+1); |
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310 | (void) strcpy(message+msgsize, bfr); |
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311 | msgsize += l; |
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312 | } |
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313 | message = realloc(message, (unsigned)(msgsize+1)); |
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314 | } |
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315 | else { /* Use read so you can send binary messages... */ |
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316 | while (nchars = read(fileno(stdin), bfr, sizeof bfr)) { |
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317 | if (nchars == -1) { |
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318 | fprintf(stderr, "Read error from stdin! Can't continue!\n"); |
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319 | exit(1); |
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320 | } |
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321 | message = realloc(message, (unsigned)(msgsize+nchars)); |
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322 | (void) memcpy(message+msgsize, bfr, nchars); |
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323 | msgsize += nchars; |
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324 | } |
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325 | /* end of msg */ |
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326 | message = realloc(message, (unsigned)(msgsize+1)); |
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327 | } |
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328 | } |
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329 | |
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330 | notice.z_opcode = opcode; |
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331 | if (tabexpand) |
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332 | un_tabify(&message, &msgsize); |
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333 | notice.z_message = message; |
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334 | notice.z_message_len = msgsize; |
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335 | |
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336 | send_off(¬ice, 1); |
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337 | exit(0); |
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338 | } |
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339 | |
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340 | void |
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341 | send_off(notice, real) |
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342 | ZNotice_t *notice; |
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343 | int real; |
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344 | { |
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345 | int i, success, retval; |
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346 | char bfr[BUFSIZ], realm_recip[BUFSIZ], dest[3 * BUFSIZ], *cp; |
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347 | ZNotice_t retnotice; |
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348 | |
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349 | success = 0; |
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350 | |
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351 | for (i=0;i<nrecips || !nrecips;i++) { |
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352 | if (realm) { |
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353 | sprintf(realm_recip, "%s@%s", (nrecips) ? recips[i] : "", realm); |
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354 | notice->z_recipient = realm_recip; |
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355 | } else { |
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356 | notice->z_recipient = (nrecips) ? recips[i] : ""; |
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357 | } |
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358 | if (nrecips) |
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359 | strcpy(dest, recips[i]); |
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360 | else if (!strcmp(class, DEFAULT_CLASS)) |
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361 | sprintf(dest, "instance \"%s\"", inst); |
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362 | else if (!strcmp(inst, DEFAULT_INSTANCE)) |
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363 | sprintf(dest, "class \"%s\"", class); |
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364 | else |
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365 | sprintf(dest, "class \"%s\", instance \"%s\"", class, inst); |
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366 | if (verbose && real) |
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367 | printf("Sending %smessage, class %s, instance %s, to %s\n", |
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368 | auth?"authenticated ":"", |
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369 | class, inst, |
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370 | nrecips?notice->z_recipient:"everyone"); |
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371 | if ((retval = ZSendNotice(notice, auth)) != ZERR_NONE) { |
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372 | (void) sprintf(bfr, "while sending notice to %s", dest); |
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373 | com_err(whoami, retval, bfr); |
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374 | break; |
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375 | } |
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376 | if (real && !quiet) { |
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377 | if (verbose) |
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378 | printf("Queued... "); |
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379 | else |
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380 | printf("Message queued for %s... ", dest); |
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381 | fflush(stdout); |
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382 | } |
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383 | if ((retval = ZIfNotice(&retnotice, (struct sockaddr_in *) 0, |
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384 | ZCompareUIDPred, |
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385 | (char *)¬ice->z_uid)) != |
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386 | ZERR_NONE) { |
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387 | ZFreeNotice(&retnotice); |
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388 | (void) sprintf(bfr, "while waiting for acknowledgement for %s", |
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389 | dest); |
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390 | com_err(whoami, retval, bfr); |
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391 | continue; |
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392 | } |
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393 | if (retnotice.z_kind == SERVNAK) { |
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394 | if (!quiet) { |
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395 | printf("Received authorization failure while sending to %s\n", |
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396 | dest); |
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397 | } |
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398 | ZFreeNotice(&retnotice); |
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399 | break; /* if auth fails, punt */ |
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400 | } |
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401 | if (retnotice.z_kind != SERVACK || !retnotice.z_message_len) { |
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402 | if (!quiet) { |
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403 | printf("Detected server failure while receiving acknowledgement for %s\n", |
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404 | dest); |
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405 | } |
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406 | ZFreeNotice(&retnotice); |
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407 | continue; |
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408 | } |
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409 | if (!strcmp(retnotice.z_message, ZSRVACK_SENT)) { |
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410 | success = 1; |
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411 | if (real && !quiet) |
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412 | printf("sent\n"); |
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413 | } else if (!strcmp(retnotice.z_message, ZSRVACK_NOTSENT)) { |
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414 | if (verbose && real && !quiet) { |
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415 | if (strcmp(class, DEFAULT_CLASS)) { |
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416 | fprintf(stderr, "Not logged in or not subscribing to class %s, instance %s\n", |
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417 | class, inst); |
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418 | } else { |
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419 | fprintf(stderr, |
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420 | "Not logged in or not subscribing to messages\n"); |
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421 | } |
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422 | } |
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423 | else if (!quiet) { |
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424 | if (!nrecips) { |
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425 | fprintf(stderr, |
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426 | "No one subscribing to class %s, instance %s\n", |
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427 | class, inst); |
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428 | } else { |
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429 | if (strcmp(class, DEFAULT_CLASS)) { |
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430 | fprintf(stderr, "%s: Not logged in or not subscribing to class %s, instance %s\n", |
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431 | notice->z_recipient, class, inst); |
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432 | } else { |
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433 | fprintf(stderr, "%s: Not logged in or not subscribing to messages\n", |
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434 | notice->z_recipient); |
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435 | } |
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436 | } |
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437 | } |
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438 | } |
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439 | else |
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440 | printf("Internal failure - illegal message field in server response\n"); |
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441 | ZFreeNotice(&retnotice); |
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442 | if (!nrecips) |
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443 | break; |
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444 | } |
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445 | if (!success) |
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446 | exit(1); |
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447 | } |
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448 | |
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449 | void |
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450 | usage(s) |
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451 | char *s; |
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452 | { |
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453 | fprintf(stderr, |
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454 | "Usage: %s [-a] [-o] [-d] [-v] [-q] [-n] [-t] [-u] [-l]\n\ |
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455 | \t[-c class] [-i inst] [-O opcode] [-f fsname] [-s signature] [-C]\n\ |
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456 | \t[user ...] [-F format] [-r realm] [-m message]\n", s); |
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457 | fprintf(stderr,"\t-f and -c are mutually exclusive\n\ |
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458 | \t-f and -i are mutually exclusive\n\ |
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459 | \trecipients must be specified unless -c or -f specifies a class\n\ |
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460 | \tother than the default class or -i or -f specifies an instance\n\ |
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461 | \tother than the default or urgent instance\n"); |
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462 | exit(1); |
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463 | } |
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464 | |
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465 | /* |
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466 | if the -f option is specified, this routine is called to canonicalize |
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467 | an instance of the form hostname[:pack]. It turns the hostname into the |
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468 | name returned by gethostbyname(hostname) |
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469 | */ |
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470 | |
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471 | char *fix_filsrv_inst(str) |
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472 | char *str; |
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473 | { |
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474 | static char fsinst[BUFSIZ]; |
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475 | char *ptr; |
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476 | struct hostent *hp; |
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477 | |
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478 | ptr = strchr(str,':'); |
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479 | if (ptr) |
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480 | *ptr = '\0'; |
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481 | |
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482 | hp = gethostbyname(str); |
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483 | if (!hp) { |
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484 | if (ptr) |
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485 | *ptr = ':'; |
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486 | return(str); |
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487 | } |
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488 | (void) strcpy(fsinst, hp->h_name); |
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489 | if (ptr) { |
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490 | (void) strcat(fsinst, ":"); |
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491 | ptr++; |
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492 | (void) strcat(fsinst, ptr); |
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493 | } |
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494 | return(fsinst); |
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495 | } |
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496 | |
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497 | /* convert tabs in the buffer into appropriate # of spaces. |
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498 | slightly tricky since the buffer can have NUL's in it. */ |
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499 | |
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500 | #ifndef TABSTOP |
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501 | #define TABSTOP 8 /* #chars between tabstops */ |
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502 | #endif /* ! TABSTOP */ |
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503 | |
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504 | void |
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505 | un_tabify(bufp, sizep) |
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506 | char **bufp; |
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507 | register int *sizep; |
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508 | { |
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509 | register char *cp, *cp2; |
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510 | char *cp3; |
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511 | register int i; |
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512 | register int column; /* column of next character */ |
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513 | register int size = *sizep; |
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514 | |
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515 | for (cp = *bufp, i = 0; size; size--, cp++) |
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516 | if (*cp == '\t') |
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517 | i++; /* count tabs in buffer */ |
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518 | |
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519 | if (!i) |
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520 | return; /* no tabs == no work */ |
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521 | |
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522 | /* To avoid allocation churning, allocate enough extra space to convert |
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523 | every tab into TABSTOP spaces */ |
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524 | /* only add (TABSTOP-1)x because we re-use the cell holding the |
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525 | tab itself */ |
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526 | cp = malloc((unsigned)(*sizep + (i * (TABSTOP-1)))); |
---|
527 | if (!cp) /* XXX */ |
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528 | return; /* punt expanding if memory fails */ |
---|
529 | cp3 = cp; |
---|
530 | /* Copy buffer, converting tabs to spaces as we go */ |
---|
531 | for (cp2 = *bufp, column = 1, size = *sizep; size; cp2++, size--) { |
---|
532 | switch (*cp2) { |
---|
533 | case '\n': |
---|
534 | case '\0': |
---|
535 | /* newline or null: reset column */ |
---|
536 | column = 1; |
---|
537 | *cp++ = *cp2; /* copy the newline */ |
---|
538 | break; |
---|
539 | default: |
---|
540 | /* copy the character */ |
---|
541 | *cp = *cp2; |
---|
542 | cp++; |
---|
543 | column++; |
---|
544 | break; |
---|
545 | case '\t': |
---|
546 | /* it's a tab, compute how many spaces to expand into. */ |
---|
547 | i = TABSTOP - ((column - 1) % TABSTOP); |
---|
548 | for (; i > 0; i--) { |
---|
549 | *cp++ = ' '; /* fill in the spaces */ |
---|
550 | column++; |
---|
551 | (*sizep)++; /* increment the size */ |
---|
552 | } |
---|
553 | (*sizep)--; /* remove one (we replaced the tab) */ |
---|
554 | break; |
---|
555 | } |
---|
556 | } |
---|
557 | free(*bufp); /* free the old buf */ |
---|
558 | *bufp = cp3; |
---|
559 | return; |
---|
560 | } |
---|