1 | |
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2 | /* |
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3 | * conflict.c -- check for conflicts in mail system |
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4 | * |
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5 | * $Id: conflict.c,v 1.1.1.1 1999-02-07 18:14:13 danw Exp $ |
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6 | */ |
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7 | |
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8 | #include <h/mh.h> |
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9 | #include <fcntl.h> |
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10 | #include <h/aliasbr.h> |
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11 | #include <zotnet/mts/mts.h> |
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12 | #include <grp.h> |
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13 | #include <pwd.h> |
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14 | |
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15 | /* |
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16 | * maximum number of directories that can |
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17 | * be specified using -search switch. |
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18 | */ |
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19 | #define NDIRS 100 |
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20 | |
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21 | /* |
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22 | * Add space for group names, 100 at a time |
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23 | */ |
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24 | #define NGRPS 100 |
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25 | |
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26 | static struct swit switches[] = { |
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27 | #define MAILSW 0 |
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28 | { "mail name", 0 }, |
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29 | #define SERCHSW 1 |
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30 | { "search directory", 0 }, |
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31 | #define VERSIONSW 2 |
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32 | { "version", 0 }, |
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33 | #define HELPSW 3 |
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34 | { "help", 4 }, |
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35 | { NULL, 0 } |
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36 | }; |
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37 | |
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38 | static char *mail = NULL; |
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39 | static char *dirs[NDIRS]; |
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40 | static FILE *out = NULL; |
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41 | |
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42 | extern struct aka *akahead; |
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43 | extern struct home *homehead; |
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44 | |
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45 | /* |
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46 | * prototypes |
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47 | */ |
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48 | void alias_files (int, char **); |
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49 | void pwd_names (void); |
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50 | void grp_names (void); |
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51 | void grp_members (void); |
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52 | void grp_ids (void); |
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53 | void maildrops (void); |
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54 | void mdrop(char *); |
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55 | int check (char *); |
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56 | void setup (void); |
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57 | |
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58 | |
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59 | int |
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60 | main (int argc, char **argv) |
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61 | { |
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62 | int akp = 0, dp = 0; |
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63 | char *cp, **argp, **arguments; |
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64 | char buf[BUFSIZ], *akv[50]; |
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65 | |
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66 | #ifdef LOCALE |
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67 | setlocale(LC_ALL, ""); |
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68 | #endif |
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69 | invo_name = r1bindex (argv[0], '/'); |
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70 | |
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71 | /* foil search of user profile/context */ |
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72 | if (context_foil (NULL) == -1) |
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73 | done (1); |
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74 | |
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75 | mts_init (invo_name); |
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76 | arguments = getarguments (invo_name, argc, argv, 0); |
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77 | argp = arguments; |
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78 | |
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79 | while ((cp = *argp++)) { |
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80 | if (*cp == '-') { |
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81 | switch (smatch (++cp, switches)) { |
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82 | case AMBIGSW: |
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83 | ambigsw (cp, switches); |
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84 | done (1); |
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85 | case UNKWNSW: |
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86 | adios (NULL, "-%s unknown", cp); |
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87 | |
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88 | case HELPSW: |
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89 | snprintf (buf, sizeof(buf), "%s [switches] [aliasfiles ...]", |
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90 | invo_name); |
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91 | print_help (buf, switches, 0); |
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92 | done (1); |
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93 | case VERSIONSW: |
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94 | print_version(invo_name); |
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95 | done (1); |
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96 | |
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97 | case MAILSW: |
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98 | if (!(cp = *argp++) || *cp == '-') |
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99 | adios (NULL, "missing argument to %s", argp[-2]); |
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100 | if (mail) |
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101 | adios (NULL, "mail to one address only"); |
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102 | else |
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103 | mail = cp; |
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104 | continue; |
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105 | |
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106 | case SERCHSW: |
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107 | if (!(cp = *argp++) || *cp == '-') |
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108 | adios (NULL, "missing argument to %s", argp[-2]); |
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109 | if (dp >= NDIRS) |
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110 | adios (NULL, "more than %d directories", NDIRS); |
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111 | dirs[dp++] = cp; |
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112 | continue; |
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113 | } |
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114 | } |
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115 | akv[akp++] = cp; |
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116 | } |
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117 | |
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118 | if (akp == 0) |
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119 | akv[akp++] = AliasFile; |
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120 | if (!homehead) |
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121 | init_pw (); |
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122 | if (!mail) |
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123 | out = stdout; |
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124 | dirs[dp] = NULL; |
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125 | |
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126 | alias_files (akp, akv); |
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127 | pwd_names (); |
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128 | grp_names (); |
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129 | grp_members (); |
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130 | grp_ids (); |
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131 | #ifdef UCI |
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132 | ldr_names (); |
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133 | ldr_ship (); |
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134 | #endif /* UCI */ |
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135 | maildrops (); |
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136 | |
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137 | done (0); |
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138 | } |
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139 | |
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140 | |
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141 | void |
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142 | alias_files (int akp, char **akv) |
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143 | { |
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144 | register int i, err; |
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145 | |
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146 | for (i = 0; i < akp; i++) |
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147 | if ((err = alias (akv[i])) != AK_OK) { |
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148 | setup (); |
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149 | fprintf (out, "aliasing error in %s - %s\n", akv[i], akerror (err)); |
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150 | } |
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151 | else |
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152 | if (out && !mail) |
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153 | fprintf (out, "alias file %s is ok\n", akv[i]); |
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154 | } |
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155 | |
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156 | |
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157 | void |
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158 | pwd_names (void) |
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159 | { |
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160 | int hit = 0; |
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161 | register struct home *hm, *lm; |
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162 | |
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163 | for (hm = homehead; hm; hm = hm->h_next) |
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164 | for (lm = hm->h_next; lm; lm = lm->h_next) |
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165 | if (strcmp (hm->h_name, lm->h_name) == 0) { |
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166 | setup (); |
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167 | fprintf (out, "duplicate user %s(uid=%d)\n", |
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168 | lm->h_name, (int) lm->h_uid); |
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169 | hit++; |
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170 | } |
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171 | |
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172 | if (!hit && out && !mail) |
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173 | fprintf (out, "no duplicate users\n"); |
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174 | } |
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175 | |
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176 | |
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177 | void |
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178 | grp_names (void) |
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179 | { |
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180 | int numgroups, maxgroups; |
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181 | int i, hit = 0; |
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182 | char **grps; |
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183 | struct group *gr; |
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184 | |
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185 | /* allocate space NGRPS at a time */ |
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186 | numgroups = 0; |
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187 | maxgroups = NGRPS; |
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188 | if (!(grps = (char **) malloc((size_t) (maxgroups * sizeof(*grps))))) |
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189 | adios (NULL, "unable to allocate group name storage"); |
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190 | |
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191 | setgrent (); |
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192 | while ((gr = getgrent ())) { |
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193 | for (i = 0; i < numgroups; i++) |
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194 | if (!strcmp (grps[i], gr->gr_name)) { |
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195 | setup (); |
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196 | fprintf (out, "duplicate group %s(gid=%d)\n", |
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197 | gr->gr_name, (int) gr->gr_gid); |
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198 | hit++; |
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199 | break; |
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200 | } |
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201 | if (i >= numgroups) { |
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202 | if (numgroups >= maxgroups) { |
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203 | maxgroups += NGRPS; |
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204 | if (!(grps = (char **) realloc(grps, |
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205 | (size_t) (maxgroups * sizeof(*grps))))) |
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206 | adios (NULL, "unable to reallocate group name storage"); |
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207 | } |
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208 | grps[numgroups++] = getcpy (gr->gr_name); |
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209 | } |
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210 | } |
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211 | endgrent (); |
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212 | |
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213 | for (i = 0; i < numgroups; i++) |
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214 | free (grps[i]); |
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215 | free (grps); |
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216 | |
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217 | if (!hit && out && !mail) |
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218 | fprintf (out, "no duplicate groups\n"); |
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219 | } |
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220 | |
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221 | |
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222 | void |
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223 | grp_members (void) |
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224 | { |
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225 | register int hit = 0; |
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226 | register char **cp, **dp; |
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227 | register struct group *gr; |
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228 | register struct home *hm; |
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229 | |
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230 | setgrent (); |
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231 | while ((gr = getgrent ())) { |
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232 | for (cp = gr->gr_mem; *cp; cp++) { |
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233 | for (hm = homehead; hm; hm = hm->h_next) |
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234 | if (!strcmp (*cp, hm->h_name)) |
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235 | break; |
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236 | if (hm == NULL) { |
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237 | setup (); |
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238 | fprintf (out, "group %s(gid=%d) has unknown member %s\n", |
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239 | gr->gr_name, (int) gr->gr_gid, *cp); |
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240 | hit++; |
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241 | } else { |
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242 | hm->h_ngrps++; |
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243 | } |
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244 | |
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245 | for (dp = cp + 1; *dp; dp++) |
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246 | if (strcmp (*cp, *dp) == 0) { |
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247 | setup (); |
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248 | fprintf (out, "group %s(gid=%d) has duplicate member %s\n", |
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249 | gr->gr_name, (int) gr->gr_gid, *cp); |
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250 | hit++; |
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251 | } |
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252 | } |
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253 | } |
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254 | endgrent (); |
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255 | |
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256 | for (hm = homehead; hm; hm = hm->h_next) |
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257 | if (hm->h_ngrps > NGROUPS_MAX) { |
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258 | setup (); |
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259 | fprintf (out, "user %s is a member of %d groups (max %d)\n", |
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260 | hm->h_name, hm->h_ngrps, NGROUPS_MAX); |
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261 | hit++; |
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262 | } |
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263 | |
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264 | if (!hit && out && !mail) |
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265 | fprintf (out, "all group members accounted for\n"); |
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266 | } |
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267 | |
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268 | |
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269 | void |
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270 | grp_ids (void) |
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271 | { /* -DRAND not implemented at most places */ |
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272 | register int hit = 0; |
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273 | register struct home *hm; |
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274 | |
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275 | for (hm = homehead; hm; hm = hm->h_next) |
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276 | if (getgrgid (hm->h_gid) == NULL) { |
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277 | setup (); |
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278 | fprintf (out, "user %s(uid=%d) has unknown group-id %d\n", |
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279 | hm->h_name, (int) hm->h_uid, (int) hm->h_gid); |
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280 | hit++; |
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281 | } |
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282 | |
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283 | if (!hit && out && !mail) |
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284 | fprintf (out, "all group-id users accounted for\n"); |
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285 | } |
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286 | |
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287 | |
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288 | void |
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289 | maildrops (void) |
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290 | { |
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291 | register int i; |
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292 | |
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293 | if (mmdfldir && *mmdfldir) |
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294 | mdrop (mmdfldir); |
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295 | if (uucpldir && *uucpldir) |
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296 | mdrop (uucpldir); |
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297 | for (i = 0; dirs[i]; i++) |
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298 | mdrop (dirs[i]); |
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299 | } |
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300 | |
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301 | |
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302 | void |
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303 | mdrop(char *drop) |
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304 | { |
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305 | register int hit = 0; |
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306 | register struct dirent *dp; |
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307 | register DIR *dd = opendir (drop); |
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308 | |
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309 | if (!dd) { |
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310 | setup (); |
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311 | fprintf (out, "unable to open maildrop area %s\n", drop); |
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312 | return; |
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313 | } |
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314 | |
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315 | while ((dp = readdir (dd))) |
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316 | if (dp->d_name[0] != '.' && !check (dp->d_name)) { |
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317 | setup (); |
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318 | fprintf (out, |
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319 | "there is a maildrop for the unknown user %s in %s\n", |
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320 | dp->d_name, drop); |
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321 | hit++; |
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322 | } |
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323 | |
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324 | closedir (dd); |
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325 | if (!hit && out && !mail) |
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326 | fprintf (out, "all maildrops accounted for in %s\n", drop); |
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327 | } |
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328 | |
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329 | |
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330 | int |
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331 | check (char *s) |
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332 | { |
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333 | register struct home *hm; |
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334 | |
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335 | for (hm = homehead; hm; hm = hm->h_next) |
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336 | if (!strcmp (s, hm->h_name)) |
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337 | return 1; |
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338 | return 0; |
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339 | } |
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340 | |
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341 | void |
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342 | setup (void) |
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343 | { |
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344 | int fd, pd[2]; |
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345 | |
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346 | if (out) |
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347 | return; |
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348 | |
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349 | if (mail) { |
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350 | if (pipe (pd) == NOTOK) |
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351 | adios ("pipe", "unable to"); |
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352 | |
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353 | switch (fork ()) { |
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354 | case NOTOK: |
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355 | adios ("fork", "unable to"); |
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356 | |
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357 | case OK: |
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358 | close (pd[1]); |
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359 | if (pd[0] != 0) { |
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360 | dup2 (pd[0], 0); |
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361 | close (pd[0]); |
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362 | } |
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363 | if ((fd = open ("/dev/null", O_WRONLY)) != NOTOK) |
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364 | if (fd != 1) { |
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365 | dup2 (fd, 1); |
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366 | close (fd); |
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367 | } |
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368 | execlp (mailproc, r1bindex (mailproc, '/'), |
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369 | mail, "-subject", invo_name, NULL); |
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370 | adios (mailproc, "unable to exec "); |
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371 | |
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372 | default: |
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373 | close (pd[0]); |
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374 | out = fdopen (pd[1], "w"); |
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375 | fprintf (out, "%s: the following is suspicious\n\n", |
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376 | invo_name); |
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377 | } |
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378 | } |
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379 | } |
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380 | |
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381 | #ifdef UCI |
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382 | /* |
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383 | * UCI specific stuff for conflict |
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384 | */ |
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385 | |
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386 | /* taken from <grpldr.h> */ |
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387 | |
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388 | #define GLDRS "/admin/etc/GroupLeaders" |
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389 | |
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390 | struct grpldr { |
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391 | char *gl_name; |
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392 | char **gl_ldr; |
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393 | }; |
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394 | |
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395 | int setglent (), endglent (); |
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396 | struct grpldr *getglent (), *getglnam (); |
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397 | |
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398 | |
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399 | /* taken from the getglent() routines */ |
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400 | |
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401 | #define MAXGLS 100 |
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402 | |
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403 | static FILE *glp = NULL; |
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404 | static char line[BUFSIZ+1]; |
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405 | static struct grpldr grpldr; |
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406 | static char *gl_ldr[MAXGLS + 1]; |
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407 | |
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408 | |
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409 | setglent() { |
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410 | if (glp == NULL) |
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411 | glp = fopen (GLDRS, "r"); |
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412 | else |
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413 | rewind (glp); |
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414 | |
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415 | return (glp != NULL); |
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416 | } |
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417 | |
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418 | |
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419 | endglent() { |
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420 | if (glp != NULL) { |
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421 | fclose (glp); |
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422 | glp = NULL; |
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423 | } |
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424 | |
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425 | return 1; |
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426 | } |
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427 | |
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428 | struct grpldr *getglent () { |
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429 | register char *cp, |
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430 | **q; |
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431 | |
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432 | if (glp == NULL && !setglent ()) |
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433 | return NULL; |
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434 | if ((cp = fgets (line, BUFSIZ, glp)) == NULL) |
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435 | return NULL; |
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436 | |
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437 | grpldr.gl_name = cp; |
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438 | grpldr.gl_ldr = q = gl_ldr; |
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439 | |
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440 | while (*cp) { |
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441 | while (*cp && !isspace (*cp)) |
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442 | cp++; |
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443 | while (*cp && isspace (*cp)) |
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444 | *cp++ = '\0'; |
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445 | if (*cp == '\0') |
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446 | break; |
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447 | if (q < gl_ldr + MAXGLS) |
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448 | *q++ = cp; |
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449 | else |
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450 | break; |
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451 | } |
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452 | *q = NULL; |
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453 | |
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454 | return (&grpldr); |
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455 | } |
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456 | |
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457 | struct grpldr *getglnam (name) |
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458 | char *name; |
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459 | { |
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460 | register struct grpldr *gl = NULL; |
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461 | |
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462 | setglent (); |
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463 | while (gl = getglent ()) |
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464 | if (strcmp (name, gl->gl_name) == 0) |
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465 | break; |
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466 | endglent (); |
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467 | |
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468 | return gl; |
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469 | } |
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470 | |
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471 | ldr_names () { |
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472 | register int gp, |
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473 | hit = 0; |
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474 | char *gldrs[NGRPS]; |
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475 | register struct grpldr *gl; |
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476 | |
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477 | gldrs[0] = NULL; |
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478 | setglent (); |
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479 | while (gl = getglent ()) { |
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480 | if (getgrnam (gl->gl_name) == NULL) { |
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481 | setup (); |
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482 | fprintf (out, "unknown group %s in group leaders file\n", |
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483 | gl->gl_name); |
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484 | hit++; |
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485 | } |
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486 | for (gp = 0; gldrs[gp]; gp++) |
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487 | if (strcmp (gldrs[gp], gl->gl_name) == 0) { |
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488 | setup (); |
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489 | fprintf (out, "duplicate group %s in group leaders file\n", |
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490 | gl->gl_name); |
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491 | hit++; |
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492 | break; |
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493 | } |
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494 | if (gldrs[gp] == NULL) |
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495 | if (gp < NGRPS) { |
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496 | gldrs[gp++] = getcpy (gl->gl_name); |
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497 | gldrs[gp] = NULL; |
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498 | } |
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499 | else { |
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500 | setup (); |
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501 | fprintf (out, "more than %d groups in group leaders file%s\n", |
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502 | " (time to recompile)", NGRPS - 1); |
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503 | hit++; |
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504 | } |
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505 | } |
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506 | endglent (); |
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507 | |
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508 | for (gp = 0; gldrs[gp]; gp++) |
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509 | free (gldrs[gp]); |
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510 | |
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511 | if (!hit && out && !mail) |
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512 | fprintf (out, "all groups in group leaders file accounted for\n"); |
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513 | } |
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514 | |
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515 | |
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516 | ldr_ship () { |
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517 | register int hit = 0; |
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518 | register char **cp, |
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519 | **dp; |
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520 | register struct grpldr *gl; |
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521 | |
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522 | setglent (); |
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523 | while (gl = getglent ()) |
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524 | for (cp = gl->gl_ldr; *cp; cp++) { |
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525 | if (!check (*cp)) { |
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526 | setup (); |
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527 | fprintf (out, "group %s has unknown leader %s\n", |
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528 | gl->gl_name, *cp); |
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529 | hit++; |
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530 | } |
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531 | |
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532 | for (dp = cp + 1; *dp; dp++) |
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533 | if (strcmp (*cp, *dp) == 0) { |
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534 | setup (); |
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535 | fprintf (out, "group %s had duplicate leader %s\n", |
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536 | gl->gl_name, *cp); |
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537 | hit++; |
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538 | } |
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539 | } |
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540 | endglent (); |
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541 | |
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542 | if (!hit && out && !mail) |
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543 | fprintf (out, "all group leaders accounted for\n"); |
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544 | } |
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545 | #endif /* UCI */ |
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