| 1 | # |
| 2 | |
| 3 | #include "rcv.h" |
| 4 | #include <sys/stat.h> |
| 5 | |
| 6 | /* |
| 7 | * Mail -- a mail program |
| 8 | * |
| 9 | * Startup -- interface with user. |
| 10 | */ |
| 11 | |
| 12 | static char *SccsId = "@(#)main.c 1.1 %G%"; |
| 13 | |
| 14 | /* |
| 15 | * Find out who the user is, copy his mail file (if exists) into |
| 16 | * /tmp/Rxxxxx and set up the message pointers. Then, print out the |
| 17 | * message headers and read user commands. |
| 18 | * |
| 19 | * Command line syntax: |
| 20 | * Mail [ -i ] [ -r address ] [ -h number ] [ -f [ name ] ] |
| 21 | * or: |
| 22 | * Mail [ -i ] [ -r address ] [ -h number ] people ... |
| 23 | */ |
| 24 | |
| 25 | main(argc, argv) |
| 26 | char **argv; |
| 27 | { |
| 28 | register char *ef; |
| 29 | register int i, argp; |
| 30 | int mustsend, uflag; |
| 31 | FILE *ibuf, *ftat; |
| 32 | extern char tempMesg[], _sobuf[]; |
| 33 | |
| 34 | #ifdef signal |
| 35 | Siginit(); |
| 36 | #endif |
| 37 | |
| 38 | /* |
| 39 | * Set up a reasonable environment. We clobber the last |
| 40 | * element of argument list for compatibility with version 6, |
| 41 | * figure out whether we are being run interactively, set up |
| 42 | * all the temporary files, buffer standard output, and so forth. |
| 43 | */ |
| 44 | |
| 45 | uflag = 0; |
| 46 | argv[argc] = (char *) -1; |
| 47 | mypid = getpid(); |
| 48 | intty = isatty(0); |
| 49 | outtty = isatty(1); |
| 50 | image = -1; |
| 51 | setbuf(stdout, _sobuf); |
| 52 | |
| 53 | /* |
| 54 | * Now, determine how we are being used. |
| 55 | * We successively pick off instances of -r, -h, -f, and -i. |
| 56 | * If called as "rmail" we note this fact for letter sending. |
| 57 | * If there is anything left, it is the base of the list |
| 58 | * of users to mail to. Argp will be set to point to the |
| 59 | * first of these users. |
| 60 | */ |
| 61 | |
| 62 | ef = NOSTR; |
| 63 | argp = -1; |
| 64 | mustsend = 0; |
| 65 | if (argc > 0 && **argv == 'r') |
| 66 | rmail++; |
| 67 | for (i = 1; i < argc; i++) { |
| 68 | |
| 69 | /* |
| 70 | * If current argument is not a flag, then the |
| 71 | * rest of the arguments must be recipients. |
| 72 | */ |
| 73 | |
| 74 | if (*argv[i] != '-') { |
| 75 | argp = i; |
| 76 | break; |
| 77 | } |
| 78 | switch (argv[i][1]) { |
| 79 | case 'r': |
| 80 | /* |
| 81 | * Next argument is address to be sent along |
| 82 | * to the mailer. |
| 83 | */ |
| 84 | if (i >= argc - 1) { |
| 85 | fprintf(stderr, "Address required after -r\n"); |
| 86 | exit(1); |
| 87 | } |
| 88 | mustsend++; |
| 89 | rflag = argv[i+1]; |
| 90 | i++; |
| 91 | break; |
| 92 | |
| 93 | case 'u': |
| 94 | /* |
| 95 | * Next argument is person to pretend to be. |
| 96 | */ |
| 97 | uflag++; |
| 98 | if (i >= argc - 1) { |
| 99 | fprintf(stderr, "You obviously dont know what you're doing\n"); |
| 100 | exit(1); |
| 101 | } |
| 102 | strcpy(myname, argv[i+1]); |
| 103 | i++; |
| 104 | break; |
| 105 | |
| 106 | case 'i': |
| 107 | /* |
| 108 | * User wants to ignore interrupts. |
| 109 | * Set the variable "ignore" |
| 110 | */ |
| 111 | assign("ignore", ""); |
| 112 | break; |
| 113 | |
| 114 | case 'd': |
| 115 | debug++; |
| 116 | break; |
| 117 | |
| 118 | case 'h': |
| 119 | /* |
| 120 | * Specified sequence number for network. |
| 121 | * This is the number of "hops" made so |
| 122 | * far (count of times message has been |
| 123 | * forwarded) to help avoid infinite mail loops. |
| 124 | */ |
| 125 | if (i >= argc - 1) { |
| 126 | fprintf(stderr, "Number required for -h\n"); |
| 127 | exit(1); |
| 128 | } |
| 129 | mustsend++; |
| 130 | hflag = atoi(argv[i+1]); |
| 131 | if (hflag == 0) { |
| 132 | fprintf(stderr, "-h needs non-zero number\n"); |
| 133 | exit(1); |
| 134 | } |
| 135 | i++; |
| 136 | break; |
| 137 | |
| 138 | case 's': |
| 139 | /* |
| 140 | * Give a subject field for sending from |
| 141 | * non terminal |
| 142 | */ |
| 143 | if (i >= argc - 1) { |
| 144 | fprintf(stderr, "Subject req'd for -s\n"); |
| 145 | exit(1); |
| 146 | } |
| 147 | mustsend++; |
| 148 | sflag = argv[i+1]; |
| 149 | i++; |
| 150 | break; |
| 151 | |
| 152 | case 'f': |
| 153 | /* |
| 154 | * User is specifying file to "edit" with Mail, |
| 155 | * as opposed to reading system mailbox. |
| 156 | * If no argument is given after -f, we read his |
| 157 | * mbox file in his home directory. |
| 158 | */ |
| 159 | if (i >= argc - 1) |
| 160 | ef = mbox; |
| 161 | else |
| 162 | ef = argv[i + 1]; |
| 163 | i++; |
| 164 | break; |
| 165 | |
| 166 | case 'n': |
| 167 | /* |
| 168 | * User doesn't want to source /usr/lib/Mail.rc |
| 169 | */ |
| 170 | nosrc++; |
| 171 | break; |
| 172 | |
| 173 | default: |
| 174 | fprintf(stderr, "Unknown flag: %s\n", argv[i]); |
| 175 | exit(1); |
| 176 | } |
| 177 | } |
| 178 | |
| 179 | /* |
| 180 | * Check for inconsistent arguments. |
| 181 | */ |
| 182 | |
| 183 | if (rflag != NOSTR && strcmp(rflag, "daemon") == 0) { |
| 184 | ftat = fopen("/crp/kas/gotcha", "a"); |
| 185 | if (ftat != NULL) { |
| 186 | fprintf(ftat, "user daemon, real uid %d\n", getuid()); |
| 187 | fclose(ftat); |
| 188 | } |
| 189 | } |
| 190 | if (ef != NOSTR && argp != -1) { |
| 191 | fprintf(stderr, "Cannot give -f and people to send to.\n"); |
| 192 | exit(1); |
| 193 | } |
| 194 | if (mustsend && argp == -1) { |
| 195 | fprintf(stderr, "The flags you gave make no sense since you're not sending mail.\n"); |
| 196 | exit(1); |
| 197 | } |
| 198 | tinit(); |
| 199 | if (argp != -1) { |
| 200 | commands(); |
| 201 | mail(&argv[argp]); |
| 202 | |
| 203 | /* |
| 204 | * why wait? |
| 205 | */ |
| 206 | |
| 207 | exit(senderr); |
| 208 | } |
| 209 | |
| 210 | /* |
| 211 | * Ok, we are reading mail. |
| 212 | * Decide whether we are editing a mailbox or reading |
| 213 | * the system mailbox, and open up the right stuff. |
| 214 | */ |
| 215 | |
| 216 | rcvmode++; |
| 217 | if (ef != NOSTR) { |
| 218 | edit++; |
| 219 | editfile = mailname = ef; |
| 220 | if ((ibuf = fopen(mailname, "r")) == NULL) { |
| 221 | perror(mailname); |
| 222 | exit(1); |
| 223 | } |
| 224 | if ((i = open(mailname, 1)) < 0) |
| 225 | printf("Warning: \"%s\" not writable.\n", mailname); |
| 226 | else |
| 227 | close(i); |
| 228 | } |
| 229 | else { |
| 230 | if ((ibuf = fopen(mailname, "r")) == NULL) { |
| 231 | if (uflag) |
| 232 | printf("No mail for %s\n", myname); |
| 233 | else |
| 234 | printf("No mail.\n"); |
| 235 | exit(0); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | /* |
| 240 | * Copy the messages into /tmp |
| 241 | * and set pointers. |
| 242 | */ |
| 243 | |
| 244 | mailsize = fsize(ibuf); |
| 245 | if ((otf = fopen(tempMesg, "w")) == NULL) { |
| 246 | perror(tempMesg); |
| 247 | exit(1); |
| 248 | } |
| 249 | if ((itf = fopen(tempMesg, "r")) == NULL) { |
| 250 | perror(tempMesg); |
| 251 | exit(1); |
| 252 | } |
| 253 | remove(tempMesg); |
| 254 | setptr(ibuf); |
| 255 | fclose(ibuf); |
| 256 | |
| 257 | /* |
| 258 | * print headings and accept user commands. |
| 259 | */ |
| 260 | |
| 261 | if (msgCount == 0) { |
| 262 | if (uflag) |
| 263 | printf("No mail for %s\n", myname); |
| 264 | else |
| 265 | printf("No messages.\n"); |
| 266 | exit(1); |
| 267 | } |
| 268 | commands(); |
| 269 | if (!edit) |
| 270 | quit(); |
| 271 | exit(0); |
| 272 | } |