Mix/Src/main.c

/* Mixmaster version 3  --  (C) 1999 Anonymizer Inc.

   Mixmaster may be redistributed and modified under certain conditions.
   This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
   ANY KIND, either express or implied. See the file COPYRIGHT for
   details.

   Command-line based frontend
   $Id: main.c,v 1.1 2001/10/31 08:19:53 rabbi Exp $ */


#include "mix3.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#ifdef POSIX
#include <unistd.h>
#else
#include <io.h>
#endif

static char *largopt(char *p, char *opt, char *name, int *error);
static void noarg(char *name, char p);

/** main *****************************************************************/

/* Returns:
 0 successful operation
 1 command line error
 2 client error condition */

int main(int argc, char *argv[])
{
  int error = 0, deflt = 1, help = 0, readmail = 0, send = -1, sendpool = 0,
  header = 1, maint = 0, keygen = 0, verbose = 2, sign = 0, encrypt = 0;
  int daemon = 0, type_list = 0;

#ifdef USE_SOCK
  int pop3 = 0;

#endif
  char *filename = NULL;
  int i;
  int ret = 0;
  char *p, *q;
  char chain[1024] = "";
  char nym[LINELEN] = "";
  BUFFER *nymopt, *pseudonym, *attachments;
  int numcopies = 0;            /* default value set in mix.cfg */
  BUFFER *msg, *chainlist, *field, *content;
  FILE *f;

  mix_init(NULL);

  msg = buf_new();
  chainlist = buf_new();
  nymopt = buf_new();
  pseudonym = buf_new();
  attachments = buf_new();
  field = buf_new();
  content = buf_new();

#ifdef USE_NCURSES
  if (argc == 1) {
    if (isatty(fileno(stdin)))
      menu_main();
    else
      menu_folder(0, NULL);
    goto end;
  }
#endif
  if (argc > 1 && strleft(argv[1], "-f")) {
    menu_folder(strlen(argv[1]) > 2 ? argv[1][2] : 0,
                argc < 3 ? NULL : argv[2]);
    goto end;
  }
  for (i = 1; i < argc; i++) {
    p = argv[i];
    if (p[0] == '-' && p[1] != '\0') {
      if (p[1] == '-') {
        p += 2;
        if (strieq(p, "help"))
          help = 1, deflt = 0;
        else if (streq(p, "verbose"))
          verbose = 1;
        else if (streq(p, "type-list"))
          type_list = 1;
        else if (streq(p, "dummy"))
          send = MSG_NULL, deflt = 0;
        else if (streq(p, "remailer"))
          maint = 1, deflt = 0;
        else if (streq(p, "generate-key"))
          keygen = 2, deflt = 0;
        else if (streq(p, "update-keys"))
          keygen = 1, deflt = 0;
        else if (streq(p, "send"))
          sendpool = 1, deflt = 0;
        else if (streq(p, "read-mail"))
          readmail = 1, deflt = 0;
#ifdef USE_SOCK
        else if (streq(p, "pop-mail"))
          pop3 = 1, deflt = 0;
#endif
        else if (streq(p, "daemon"))
          daemon = 1, deflt = 0;
        else if (streq(p, "post"))
          send = MSG_POST;
        else if (streq(p, "mail"))
          send = MSG_MAIL;
        else if (streq(p, "sign"))
          sign = 1;
        else if (streq(p, "encrypt"))
          encrypt = 1;
        else if ((q = largopt(p, "to", argv[0], &error)) != NULL) {
          header = 0;
          buf_appendf(msg, "To: %s\n", q);
        } else if ((q = largopt(p, "post-to", argv[0], &error)) != NULL) {
          send = MSG_POST, header = 0;
          buf_appendf(msg, "Newsgroups: %s\n", q);
        } else if ((q = largopt(p, "subject", argv[0], &error)) != NULL) {
          buf_appendf(msg, "Subject: %s\n", q);
        } else if ((q = largopt(p, "header", argv[0], &error)) != NULL) {
          buf_appendf(msg, "%s\n", q);
        } else if ((q = largopt(p, "chain", argv[0], &error)) != NULL) {
          buf_appendf(msg, "Chain: %s\n", q);
        }
#ifdef USE_PGP
        else if ((q = largopt(p, "reply-chain", argv[0], &error)) != NULL) {
          buf_appendf(msg, "Reply-Chain: %s\n", q);
        } else if ((q = largopt(p, "latency", argv[0], &error)) != NULL) {
          buf_appendf(msg, "Latency: %s\n", q);
        } else if ((q = largopt(p, "attachment", argv[0], &error)) != NULL) {
          buf_appendf(attachments, "%s\n", q);
        } else if ((q = largopt(p, "nym-config", argv[0], &error)) != NULL) {
          deflt = 0;
          strncpy(nym, q, sizeof(nym));
          if (i > argc && strileft(argv[i + 1], "name="))
            buf_sets(pseudonym, argv[++i] + 5);
          else if (i > argc && strileft(argv[i + 1], "opt="))
            buf_appends(nymopt, argv[++i] + 5);
        } else if ((q = largopt(p, "nym", argv[0], &error)) != NULL) {
          buf_appendf(msg, "Nym: %s\n", q);
        }
#endif
        else if ((q = largopt(p, "copies", argv[0], &error)) != NULL) {
          sscanf(q, "%d", &numcopies);
        } else if (error == 0 && mix_configline(p) == 0) {
          fprintf(stderr, "%s: Invalid option %s\n", argv[0], argv[i]);
          error = 1;
        }
      } else {
        while (*++p) {
          switch (*p) {
          case 'd':
            send = MSG_NULL, deflt = 0;
            break;
          case 'R':
            readmail = 1, deflt = 0;
            break;
          case 'S':
            sendpool = 1, deflt = 0;
            break;
          case 'M':
            maint = 1, deflt = 0;
            break;
#ifdef USE_SOCK
          case 'P':
            pop3 = 1, deflt = 0;
            break;
#endif
          case 'D':
            daemon = 1, deflt = 0;
            break;
          case 'G':
            keygen = 2, deflt = 0;
            break;
          case 'K':
            keygen = 1, deflt = 0;
            break;
          case 'L':             /* backwards compatibility */
            break;
          case 'v':
            verbose = 1;
            break;
          case 'h':
            help = 1, deflt = 0;
            break;
          case 'T':
            type_list = 1;
            break;
          case 't':
            if (*(p + 1) == 'o')
              p++;
            header = 0;
            if (i < argc - 1)
              buf_appendf(msg, "To: %s\n", argv[++i]);
            else {
              fprintf(stderr, "%s: Missing argument for option -to\n",
                      argv[0]);
              error = 1;
            }
            break;
          case 's':
            if (i < argc - 1)
              buf_appendf(msg, "Subject: %s\n", argv[++i]);
            else {
              noarg(argv[0], *p);
              error = 1;
            }
            break;
          case 'l':
            if (i < argc - 1)
              buf_appendf(msg, "Chain: %s\n", argv[++i]);
            else {
              noarg(argv[0], *p);
              error = 1;
            }
            break;
          case 'r':
            if (i < argc - 1)
              buf_appendf(msg, "Reply-Chain: %s\n, argv[++i]");
            else {
              noarg(argv[0], *p);
              error = 1;
            }
            break;
#ifdef USE_PGP
          case 'n':
            if (i < argc - 1)
              buf_appendf(msg, "Nym: %s\n", argv[++i]);
            else {
              noarg(argv[0], *p);
              error = 1;
            }
            break;
#endif
          case 'c':
            if (i < argc - 1)
              sscanf(argv[++i], "%d", &numcopies);
            else {
              noarg(argv[0], *p);
              error = 1;
            }
            break;
          case 'p':
            send = MSG_POST;
            break;
          case 'g':
            if (i < argc - 1) {
              send = MSG_POST, header = 0;
              buf_appendf(msg, "Newsgroups: %s\n", argv[++i]);
            } else {
              noarg(argv[0], *p);
              error = 1;
            }
          case 'a':
            if (i < argc - 1)
              buf_appendf(attachments, "%s\n", argv[++i]);
            else {
              noarg(argv[0], *p);
              error = 1;
            }
          case 'm':
            send = MSG_MAIL;
            break;
          default:
            fprintf(stderr, "%s: Invalid option -%c\n", argv[0], *p);
            error = 1;
            break;
          }
        }
      }
    } else {
      if (strchr(argv[i], '@')) {
        header = 0;
        buf_appendf(msg, "To: %s\n", argv[i]);
      } else {
        if (filename == NULL)
          filename = argv[i];
        else {
          fprintf(stderr, "%s: Error in command line: %s\n", argv[0], argv[i]);
          error = 1;
        }
      }
    }
  }

  if (error) {
    ret = 1;
    goto end;
  }
  if (type_list) {
    if (file_to_out(TYPE2LIST) < 0) {
      fprintf(stderr, "File %s not found.\n", TYPE2LIST);
    }
    goto end;
  }
  if (help || (isatty(fileno(stdin)) && isatty(fileno(stdout))))
    fprintf(stderr, "Mixmaster %s - %s\n", VERSION, COPYRIGHT);

  if (help) {
    printf("Usage: %s [options] [user@host] [filename]\n\n", argv[0]);
    printf("Options:\n\
\n\
-h, --help                        summary of command line options\n\
-T, --type-list                   list available remailers\n\
-t, --to=user@host                the recipient's address(es)\n\
-g, --post-to=newsgroup           newsgroup(s) to post to\n\
-p, --post                        input is a Usenet article\n\
-m, --mail                        input is a mail message\n\
-s, --subject=subject             message subject\n\
    --header='header line'        arbitrary message headers\n\
-a, --attachment=file             attach a file\n"
#ifdef USE_PGP
           "-n, --nym=yournym                 use pseudonym to send the message\n\
    --encrypt                     encrypt the message using the PGP format\n\
    --sign                        sign the message using the PGP format\n"
#endif
           "-l, --chain=mix1,mix2,mix3,...    specify a remailer chain\n\
-c, --copies=num                  send num copies to increase reliability\n\
-d, --dummy                       generate a dummy message\n\
-S, --send                        send the message(s) in the pool\n"
#ifdef USE_PGP
           "    --nym-config=yournym          generate a new pseudonym\n\
    --latency=hours               reply chain latency\n\
    --reply-chain=rem1,rem2,...   reply chain for the pseudonym\n"
#endif
           "-v, --verbose                     output informational messages\n\
-f [file]                         read a mail folder\n"
#ifndef USE_NCURSES
           "\n-fr, -ff, -fg [file]              send reply/followup/group reply to a message\n"
#endif
           "\nThe input file is expected to contain mail headers if no address is\n\
specified in the command line.\n\
\n\
Remailer:\n\
\n\
-R, --read-mail                   read remailer message from stdin\n\
-M, --remailer                    process the remailer pool\n\
-D, --daemon                      remailer as background process\n"
#ifdef USE_SOCK
           "-S, --send                        force sending messages from the pool\n"
#endif
           "-P, --pop-mail                    force getting messages from POP3 servers\n\
-G, --generate-key                generate a new remailer key\n\
-K, --update-keys                 generate remailer keys if necessary\n");

    ret = 0;
    goto end;
  }
  if (deflt && send == -1)
    send = MSG_MAIL;
  if (nym[0] != 0)
    send = -1;
  if ((send == MSG_MAIL || send == MSG_POST) && filename == NULL &&
      header == 1 && isatty(fileno(stdin))) {
    /* we don't get here if USE_NCURSES is set */
    printf("Run `%s -h' to view a summary of the command line options.\n\nEnter the message, complete with headers.\n",
           argv[0]);
#ifdef UNIX
    printf("When done, press ^D.\n\n");
#else
    printf("When done, press ^Z.\n\n");
#endif
  }
  if (header == 0)
    buf_nl(msg);

  if (readmail || send == MSG_MAIL || send == MSG_POST) {
    if (filename == NULL || streq(filename, "-"))
      f = stdin;
    else {
      f = fopen(filename, "r");
      if (f == NULL)
        fprintf(stderr, "Can't open %s.\n", filename);
    }

    if (f && buf_read(msg, f) != -1) {
      if (readmail)
        mix_decrypt(msg);
      if (send == MSG_MAIL || send == MSG_POST) {
        BUFFER *sendmsg;
        int numdest = 0;

        sendmsg = buf_new();

        while (buf_getheader(msg, field, content) == 0) {
          if (bufieq(field, "nym")) {
            strncpy(nym, content->data, sizeof(nym));
          } else if (bufieq(field, "chain"))
            if (strchr(content->data, ';')) {
              i = strchr(content->data, ';') - (char *)content->data;
              strncpy(chain, content->data, i);
              if (strstr(content->data + i, "copies=") != NULL) {
                sscanf(strstr(content->data + i, "copies=") +
                       sizeof("copies=") - 1, "%d", &numcopies);
              }
            } else
              strncpy(chain, content->data, sizeof(chain));
          else {                /* line goes into message */
            if ((send == MSG_MAIL && bufieq(field, "to"))
                || (send == MSG_POST && bufieq(field, "newsgroups")))
              numdest++;
            if (bufieq(field, "from"))
              fprintf(stderr, "Warning: The message has a From: line.\n");
            buf_appendheader(sendmsg, field, content);
          }
        }
        buf_nl(sendmsg);
        buf_rest(sendmsg, msg);

        while (buf_getline(attachments, field) != -1)
          if (attachfile(sendmsg, field) == -1) {
            errlog(ERRORMSG, "Can't attach %b!\n", field);
            ret = 2;
            goto end;
          }

#ifdef USE_PGP
        if (nym[0] != 0 && strchr(nym, '@') == NULL)
          strcatn(nym, "@", sizeof(nym));
        if (sign || encrypt) {
          BUFFER *pass;

          pass = buf_new();
          user_pass(pass);
          if (pgp_mailenc((encrypt ? PGP_ENCRYPT : 0) |
                          (nym[0] != 0 && sign ? PGP_SIGN : 0) |
                          PGP_TEXT | PGP_REMAIL, sendmsg, nym,
                          pass, NULL, NYMSECRING) != 0) {
            fprintf(stderr, "Encryption failed: missing key!");
            ret = 2;
            goto end;
          }
          buf_free(pass);
        }
        if (nym[0] != 0) {
          if (nym_encrypt(sendmsg, nym, send) == 0)
            send = MSG_MAIL;
          else
            fprintf(stderr, "Nym error, sending message anonymously.\n");
        }
#endif
        if (numdest == 0) {
          fprintf(stderr, "No destination address given!\n");
          ret = 2;
        } else if (numcopies < 0 || numcopies > 10) {
          fprintf(stderr, "Invalid number of copies!\n");
          ret = 2;
        } else {
          if (mix_encrypt(send, sendmsg, chain, numcopies,
                          chainlist) == -1) {
            ret = 2;
            if (chainlist->length)
              fprintf(stderr, "%s\n", chainlist->data);
            else
              fprintf(stderr, "Failed!\n");
          } else if (verbose) {
            fprintf(stderr, "Chain: ");
            buf_write(chainlist, stderr);
          }
        }

        buf_free(sendmsg);
      }
      if (filename != NULL)
        fclose(f);
    } else
      ret = 2;
  }
  if (send == MSG_NULL) {
    if (msg->length) {
      while (buf_getheader(msg, field, content) == 0) {
        if (bufieq(field, "chain"))
          strncpy(chain, content->data, sizeof(chain));
      }
    }
    if (mix_encrypt(MSG_NULL, NULL, chain, numcopies, chainlist) == -1) {
      ret = 2;
      if (chainlist->length)
        fprintf(stderr, "%s\n", chainlist->data);
      else
        fprintf(stderr, "Failed!\n");
    } else if (verbose) {
      fprintf(stderr, "Chain: ");
      buf_write(chainlist, stderr);
    }
  }
#ifdef USE_PGP
  if (nym[0] != 0) {
    char nymserver[LINELEN] = "*";
    BUFFER *chains;

    chains = buf_new();
    if (numcopies < 1 || numcopies > 10)
      numcopies = 1;
    while (buf_getheader(msg, field, content) != -1) {
      if (bufieq(field, "chain"))
        strncpy(chain, content->data, sizeof(chain));
      else if (bufieq(field, "reply-chain"))
        buf_appendf(chains, "Chain: %b\n", content);
      else if (field->length)
        buf_appendheader(chains, field, content);
      else
        buf_nl(chains);
    }
    if (strchr(nym, '@')) {
      strncpy(nymserver, strchr(nym, '@'), sizeof(nymserver));
      *strchr(nym, '@') = '\0';
    }
    if (nym_config(NYM_CREATE, nym, nymserver, pseudonym,
                   chain, numcopies, chains, nymopt) < 0) {
      ret = 2;
      fprintf(stderr, "Failed!\n");
    }
    user_delpass();
    buf_free(chains);
  }
#endif

  if (keygen)
    keymgt(keygen);
  if (sendpool)
    mix_send();
#ifdef USE_SOCK
  if (pop3)
    pop3get();
#endif
  if (maint)
    mix_regular(0);

end:
  buf_free(field);
  buf_free(content);
  buf_free(chainlist);
  buf_free(msg);
  buf_free(nymopt);
  buf_free(pseudonym);
  buf_free(attachments);

  if (daemon) {
#ifdef UNIX
    int pid;

    fprintf(stderr, "Detaching.\n");
    pid = fork();
    if (pid > 0)
      exit(0);
#endif
    mix_daemon();
  }
  mix_exit();
  return (ret);
}

static char *largopt(char *p, char *opt, char *name, int *error)
{
  if (streq(p, opt)) {
    fprintf(stderr, "%s: Missing argument for option --%s\n", name, p);
    *error = 1;
  } else if (strleft(p, opt) && p[strlen(opt)] == '=') {
    return (p + strlen(opt) + 1);
  }
  return (NULL);
}

static void noarg(char *name, char p)
{
  fprintf(stderr, "%s: Missing argument for option -%c\n", name, p);
}
1	rabbi	1	/* Mixmaster version 3 -- (C) 1999 Anonymizer Inc.
2
3			Mixmaster may be redistributed and modified under certain conditions.
4			This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
5			ANY KIND, either express or implied. See the file COPYRIGHT for
6			details.
7
8			Command-line based frontend
9			$Id: main.c,v 1.1 2001/10/31 08:19:53 rabbi Exp $ */
10
11
12			#include "mix3.h"
13			#include <stdio.h>
14			#include <string.h>
15			#include <ctype.h>
16			#ifdef POSIX
17			#include <unistd.h>
18			#else
19			#include <io.h>
20			#endif
21
22			static char largopt(char p, char opt, char name, int *error);
23			static void noarg(char *name, char p);
24
25			/ main ***************************************************************/
26
27			/* Returns:
28			0 successful operation
29			1 command line error
30			2 client error condition */
31
32			int main(int argc, char *argv[])
33			{
34			int error = 0, deflt = 1, help = 0, readmail = 0, send = -1, sendpool = 0,
35			header = 1, maint = 0, keygen = 0, verbose = 2, sign = 0, encrypt = 0;
36			int daemon = 0, type_list = 0;
37
38			#ifdef USE_SOCK
39			int pop3 = 0;
40
41			#endif
42			char *filename = NULL;
43			int i;
44			int ret = 0;
45			char p, q;
46			char chain[1024] = "";
47			char nym[LINELEN] = "";
48			BUFFER nymopt, pseudonym, *attachments;
49			int numcopies = 0; /* default value set in mix.cfg */
50			BUFFER msg, chainlist, field, content;
51			FILE *f;
52
53			mix_init(NULL);
54
55			msg = buf_new();
56			chainlist = buf_new();
57			nymopt = buf_new();
58			pseudonym = buf_new();
59			attachments = buf_new();
60			field = buf_new();
61			content = buf_new();
62
63			#ifdef USE_NCURSES
64			if (argc == 1) {
65			if (isatty(fileno(stdin)))
66			menu_main();
67			else
68			menu_folder(0, NULL);
69			goto end;
70			}
71			#endif
72			if (argc > 1 && strleft(argv[1], "-f")) {
73			menu_folder(strlen(argv[1]) > 2 ? argv[1][2] : 0,
74			argc < 3 ? NULL : argv[2]);
75			goto end;
76			}
77			for (i = 1; i < argc; i++) {
78			p = argv[i];
79			if (p[0] == '-' && p[1] != '\0') {
80			if (p[1] == '-') {
81			p += 2;
82			if (strieq(p, "help"))
83			help = 1, deflt = 0;
84			else if (streq(p, "verbose"))
85			verbose = 1;
86			else if (streq(p, "type-list"))
87			type_list = 1;
88			else if (streq(p, "dummy"))
89			send = MSG_NULL, deflt = 0;
90			else if (streq(p, "remailer"))
91			maint = 1, deflt = 0;
92			else if (streq(p, "generate-key"))
93			keygen = 2, deflt = 0;
94			else if (streq(p, "update-keys"))
95			keygen = 1, deflt = 0;
96			else if (streq(p, "send"))
97			sendpool = 1, deflt = 0;
98			else if (streq(p, "read-mail"))
99			readmail = 1, deflt = 0;
100			#ifdef USE_SOCK
101			else if (streq(p, "pop-mail"))
102			pop3 = 1, deflt = 0;
103			#endif
104			else if (streq(p, "daemon"))
105			daemon = 1, deflt = 0;
106			else if (streq(p, "post"))
107			send = MSG_POST;
108			else if (streq(p, "mail"))
109			send = MSG_MAIL;
110			else if (streq(p, "sign"))
111			sign = 1;
112			else if (streq(p, "encrypt"))
113			encrypt = 1;
114			else if ((q = largopt(p, "to", argv[0], &error)) != NULL) {
115			header = 0;
116			buf_appendf(msg, "To: %s\n", q);
117			} else if ((q = largopt(p, "post-to", argv[0], &error)) != NULL) {
118			send = MSG_POST, header = 0;
119			buf_appendf(msg, "Newsgroups: %s\n", q);
120			} else if ((q = largopt(p, "subject", argv[0], &error)) != NULL) {
121			buf_appendf(msg, "Subject: %s\n", q);
122			} else if ((q = largopt(p, "header", argv[0], &error)) != NULL) {
123			buf_appendf(msg, "%s\n", q);
124			} else if ((q = largopt(p, "chain", argv[0], &error)) != NULL) {
125			buf_appendf(msg, "Chain: %s\n", q);
126			}
127			#ifdef USE_PGP
128			else if ((q = largopt(p, "reply-chain", argv[0], &error)) != NULL) {
129			buf_appendf(msg, "Reply-Chain: %s\n", q);
130			} else if ((q = largopt(p, "latency", argv[0], &error)) != NULL) {
131			buf_appendf(msg, "Latency: %s\n", q);
132			} else if ((q = largopt(p, "attachment", argv[0], &error)) != NULL) {
133			buf_appendf(attachments, "%s\n", q);
134			} else if ((q = largopt(p, "nym-config", argv[0], &error)) != NULL) {
135			deflt = 0;
136			strncpy(nym, q, sizeof(nym));
137			if (i > argc && strileft(argv[i + 1], "name="))
138			buf_sets(pseudonym, argv[++i] + 5);
139			else if (i > argc && strileft(argv[i + 1], "opt="))
140			buf_appends(nymopt, argv[++i] + 5);
141			} else if ((q = largopt(p, "nym", argv[0], &error)) != NULL) {
142			buf_appendf(msg, "Nym: %s\n", q);
143			}
144			#endif
145			else if ((q = largopt(p, "copies", argv[0], &error)) != NULL) {
146			sscanf(q, "%d", &numcopies);
147			} else if (error == 0 && mix_configline(p) == 0) {
148			fprintf(stderr, "%s: Invalid option %s\n", argv[0], argv[i]);
149			error = 1;
150			}
151			} else {
152			while (*++p) {
153			switch (*p) {
154			case 'd':
155			send = MSG_NULL, deflt = 0;
156			break;
157			case 'R':
158			readmail = 1, deflt = 0;
159			break;
160			case 'S':
161			sendpool = 1, deflt = 0;
162			break;
163			case 'M':
164			maint = 1, deflt = 0;
165			break;
166			#ifdef USE_SOCK
167			case 'P':
168			pop3 = 1, deflt = 0;
169			break;
170			#endif
171			case 'D':
172			daemon = 1, deflt = 0;
173			break;
174			case 'G':
175			keygen = 2, deflt = 0;
176			break;
177			case 'K':
178			keygen = 1, deflt = 0;
179			break;
180			case 'L': /* backwards compatibility */
181			break;
182			case 'v':
183			verbose = 1;
184			break;
185			case 'h':
186			help = 1, deflt = 0;
187			break;
188			case 'T':
189			type_list = 1;
190			break;
191			case 't':
192			if (*(p + 1) == 'o')
193			p++;
194			header = 0;
195			if (i < argc - 1)
196			buf_appendf(msg, "To: %s\n", argv[++i]);
197			else {
198			fprintf(stderr, "%s: Missing argument for option -to\n",
199			argv[0]);
200			error = 1;
201			}
202			break;
203			case 's':
204			if (i < argc - 1)
205			buf_appendf(msg, "Subject: %s\n", argv[++i]);
206			else {
207			noarg(argv[0], *p);
208			error = 1;
209			}
210			break;
211			case 'l':
212			if (i < argc - 1)
213			buf_appendf(msg, "Chain: %s\n", argv[++i]);
214			else {
215			noarg(argv[0], *p);
216			error = 1;
217			}
218			break;
219			case 'r':
220			if (i < argc - 1)
221			buf_appendf(msg, "Reply-Chain: %s\n, argv[++i]");
222			else {
223			noarg(argv[0], *p);
224			error = 1;
225			}
226			break;
227			#ifdef USE_PGP
228			case 'n':
229			if (i < argc - 1)
230			buf_appendf(msg, "Nym: %s\n", argv[++i]);
231			else {
232			noarg(argv[0], *p);
233			error = 1;
234			}
235			break;
236			#endif
237			case 'c':
238			if (i < argc - 1)
239			sscanf(argv[++i], "%d", &numcopies);
240			else {
241			noarg(argv[0], *p);
242			error = 1;
243			}
244			break;
245			case 'p':
246			send = MSG_POST;
247			break;
248			case 'g':
249			if (i < argc - 1) {
250			send = MSG_POST, header = 0;
251			buf_appendf(msg, "Newsgroups: %s\n", argv[++i]);
252			} else {
253			noarg(argv[0], *p);
254			error = 1;
255			}
256			case 'a':
257			if (i < argc - 1)
258			buf_appendf(attachments, "%s\n", argv[++i]);
259			else {
260			noarg(argv[0], *p);
261			error = 1;
262			}
263			case 'm':
264			send = MSG_MAIL;
265			break;
266			default:
267			fprintf(stderr, "%s: Invalid option -%c\n", argv[0], *p);
268			error = 1;
269			break;
270			}
271			}
272			}
273			} else {
274			if (strchr(argv[i], '@')) {
275			header = 0;
276			buf_appendf(msg, "To: %s\n", argv[i]);
277			} else {
278			if (filename == NULL)
279			filename = argv[i];
280			else {
281			fprintf(stderr, "%s: Error in command line: %s\n", argv[0], argv[i]);
282			error = 1;
283			}
284			}
285			}
286			}
287
288			if (error) {
289			ret = 1;
290			goto end;
291			}
292			if (type_list) {
293			if (file_to_out(TYPE2LIST) < 0) {
294			fprintf(stderr, "File %s not found.\n", TYPE2LIST);
295			}
296			goto end;
297			}
298			if (help \|\| (isatty(fileno(stdin)) && isatty(fileno(stdout))))
299			fprintf(stderr, "Mixmaster %s - %s\n", VERSION, COPYRIGHT);
300
301			if (help) {
302			printf("Usage: %s [options] [user@host] [filename]\n\n", argv[0]);
303			printf("Options:\n\
304			\n\
305			-h, --help summary of command line options\n\
306			-T, --type-list list available remailers\n\
307			-t, --to=user@host the recipient's address(es)\n\
308			-g, --post-to=newsgroup newsgroup(s) to post to\n\
309			-p, --post input is a Usenet article\n\
310			-m, --mail input is a mail message\n\
311			-s, --subject=subject message subject\n\
312			--header='header line' arbitrary message headers\n\
313			-a, --attachment=file attach a file\n"
314			#ifdef USE_PGP
315			"-n, --nym=yournym use pseudonym to send the message\n\
316			--encrypt encrypt the message using the PGP format\n\
317			--sign sign the message using the PGP format\n"
318			#endif
319			"-l, --chain=mix1,mix2,mix3,... specify a remailer chain\n\
320			-c, --copies=num send num copies to increase reliability\n\
321			-d, --dummy generate a dummy message\n\
322			-S, --send send the message(s) in the pool\n"
323			#ifdef USE_PGP
324			" --nym-config=yournym generate a new pseudonym\n\
325			--latency=hours reply chain latency\n\
326			--reply-chain=rem1,rem2,... reply chain for the pseudonym\n"
327			#endif
328			"-v, --verbose output informational messages\n\
329			-f [file] read a mail folder\n"
330			#ifndef USE_NCURSES
331			"\n-fr, -ff, -fg [file] send reply/followup/group reply to a message\n"
332			#endif
333			"\nThe input file is expected to contain mail headers if no address is\n\
334			specified in the command line.\n\
335			\n\
336			Remailer:\n\
337			\n\
338			-R, --read-mail read remailer message from stdin\n\
339			-M, --remailer process the remailer pool\n\
340			-D, --daemon remailer as background process\n"
341			#ifdef USE_SOCK
342			"-S, --send force sending messages from the pool\n"
343			#endif
344			"-P, --pop-mail force getting messages from POP3 servers\n\
345			-G, --generate-key generate a new remailer key\n\
346			-K, --update-keys generate remailer keys if necessary\n");
347
348			ret = 0;
349			goto end;
350			}
351			if (deflt && send == -1)
352			send = MSG_MAIL;
353			if (nym[0] != 0)
354			send = -1;
355			if ((send == MSG_MAIL \|\| send == MSG_POST) && filename == NULL &&
356			header == 1 && isatty(fileno(stdin))) {
357			/* we don't get here if USE_NCURSES is set */
358			printf("Run `%s -h' to view a summary of the command line options.\n\nEnter the message, complete with headers.\n",
359			argv[0]);
360			#ifdef UNIX
361			printf("When done, press ^D.\n\n");
362			#else
363			printf("When done, press ^Z.\n\n");
364			#endif
365			}
366			if (header == 0)
367			buf_nl(msg);
368
369			if (readmail \|\| send == MSG_MAIL \|\| send == MSG_POST) {
370			if (filename == NULL \|\| streq(filename, "-"))
371			f = stdin;
372			else {
373			f = fopen(filename, "r");
374			if (f == NULL)
375			fprintf(stderr, "Can't open %s.\n", filename);
376			}
377
378			if (f && buf_read(msg, f) != -1) {
379			if (readmail)
380			mix_decrypt(msg);
381			if (send == MSG_MAIL \|\| send == MSG_POST) {
382			BUFFER *sendmsg;
383			int numdest = 0;
384
385			sendmsg = buf_new();
386
387			while (buf_getheader(msg, field, content) == 0) {
388			if (bufieq(field, "nym")) {
389			strncpy(nym, content->data, sizeof(nym));
390			} else if (bufieq(field, "chain"))
391			if (strchr(content->data, ';')) {
392			i = strchr(content->data, ';') - (char *)content->data;
393			strncpy(chain, content->data, i);
394			if (strstr(content->data + i, "copies=") != NULL) {
395			sscanf(strstr(content->data + i, "copies=") +
396			sizeof("copies=") - 1, "%d", &numcopies);
397			}
398			} else
399			strncpy(chain, content->data, sizeof(chain));
400			else { /* line goes into message */
401			if ((send == MSG_MAIL && bufieq(field, "to"))
402			\|\| (send == MSG_POST && bufieq(field, "newsgroups")))
403			numdest++;
404			if (bufieq(field, "from"))
405			fprintf(stderr, "Warning: The message has a From: line.\n");
406			buf_appendheader(sendmsg, field, content);
407			}
408			}
409			buf_nl(sendmsg);
410			buf_rest(sendmsg, msg);
411
412			while (buf_getline(attachments, field) != -1)
413			if (attachfile(sendmsg, field) == -1) {
414			errlog(ERRORMSG, "Can't attach %b!\n", field);
415			ret = 2;
416			goto end;
417			}
418
419			#ifdef USE_PGP
420			if (nym[0] != 0 && strchr(nym, '@') == NULL)
421			strcatn(nym, "@", sizeof(nym));
422			if (sign \|\| encrypt) {
423			BUFFER *pass;
424
425			pass = buf_new();
426			user_pass(pass);
427			if (pgp_mailenc((encrypt ? PGP_ENCRYPT : 0) \|
428			(nym[0] != 0 && sign ? PGP_SIGN : 0) \|
429			PGP_TEXT \| PGP_REMAIL, sendmsg, nym,
430			pass, NULL, NYMSECRING) != 0) {
431			fprintf(stderr, "Encryption failed: missing key!");
432			ret = 2;
433			goto end;
434			}
435			buf_free(pass);
436			}
437			if (nym[0] != 0) {
438			if (nym_encrypt(sendmsg, nym, send) == 0)
439			send = MSG_MAIL;
440			else
441			fprintf(stderr, "Nym error, sending message anonymously.\n");
442			}
443			#endif
444			if (numdest == 0) {
445			fprintf(stderr, "No destination address given!\n");
446			ret = 2;
447			} else if (numcopies < 0 \|\| numcopies > 10) {
448			fprintf(stderr, "Invalid number of copies!\n");
449			ret = 2;
450			} else {
451			if (mix_encrypt(send, sendmsg, chain, numcopies,
452			chainlist) == -1) {
453			ret = 2;
454			if (chainlist->length)
455			fprintf(stderr, "%s\n", chainlist->data);
456			else
457			fprintf(stderr, "Failed!\n");
458			} else if (verbose) {
459			fprintf(stderr, "Chain: ");
460			buf_write(chainlist, stderr);
461			}
462			}
463
464			buf_free(sendmsg);
465			}
466			if (filename != NULL)
467			fclose(f);
468			} else
469			ret = 2;
470			}
471			if (send == MSG_NULL) {
472			if (msg->length) {
473			while (buf_getheader(msg, field, content) == 0) {
474			if (bufieq(field, "chain"))
475			strncpy(chain, content->data, sizeof(chain));
476			}
477			}
478			if (mix_encrypt(MSG_NULL, NULL, chain, numcopies, chainlist) == -1) {
479			ret = 2;
480			if (chainlist->length)
481			fprintf(stderr, "%s\n", chainlist->data);
482			else
483			fprintf(stderr, "Failed!\n");
484			} else if (verbose) {
485			fprintf(stderr, "Chain: ");
486			buf_write(chainlist, stderr);
487			}
488			}
489			#ifdef USE_PGP
490			if (nym[0] != 0) {
491			char nymserver[LINELEN] = "*";
492			BUFFER *chains;
493
494			chains = buf_new();
495			if (numcopies < 1 \|\| numcopies > 10)
496			numcopies = 1;
497			while (buf_getheader(msg, field, content) != -1) {
498			if (bufieq(field, "chain"))
499			strncpy(chain, content->data, sizeof(chain));
500			else if (bufieq(field, "reply-chain"))
501			buf_appendf(chains, "Chain: %b\n", content);
502			else if (field->length)
503			buf_appendheader(chains, field, content);
504			else
505			buf_nl(chains);
506			}
507			if (strchr(nym, '@')) {
508			strncpy(nymserver, strchr(nym, '@'), sizeof(nymserver));
509			*strchr(nym, '@') = '\0';
510			}
511			if (nym_config(NYM_CREATE, nym, nymserver, pseudonym,
512			chain, numcopies, chains, nymopt) < 0) {
513			ret = 2;
514			fprintf(stderr, "Failed!\n");
515			}
516			user_delpass();
517			buf_free(chains);
518			}
519			#endif
520
521			if (keygen)
522			keymgt(keygen);
523			if (sendpool)
524			mix_send();
525			#ifdef USE_SOCK
526			if (pop3)
527			pop3get();
528			#endif
529			if (maint)
530			mix_regular(0);
531
532			end:
533			buf_free(field);
534			buf_free(content);
535			buf_free(chainlist);
536			buf_free(msg);
537			buf_free(nymopt);
538			buf_free(pseudonym);
539			buf_free(attachments);
540
541			if (daemon) {
542			#ifdef UNIX
543			int pid;
544
545			fprintf(stderr, "Detaching.\n");
546			pid = fork();
547			if (pid > 0)
548			exit(0);
549			#endif
550			mix_daemon();
551			}
552			mix_exit();
553			return (ret);
554			}
555
556			static char largopt(char p, char opt, char name, int *error)
557			{
558			if (streq(p, opt)) {
559			fprintf(stderr, "%s: Missing argument for option --%s\n", name, p);
560			*error = 1;
561			} else if (strleft(p, opt) && p[strlen(opt)] == '=') {
562			return (p + strlen(opt) + 1);
563			}
564			return (NULL);
565			}
566
567			static void noarg(char *name, char p)
568			{
569			fprintf(stderr, "%s: Missing argument for option -%c\n", name, p);
570			}