src/imap.c

   1 /* imap.c --- Implement IMAP profile of SASL login.
   2  * Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007  Simon Josefsson
   3  *
   4  * This file is part of GNU SASL.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include "imap.h"
  22
  23 #define MAX_LINE_LENGTH BUFSIZ
  24
  25 int
  26 imap_greeting (void)
  27 {
  28   char *in;
  29
  30   if (!readln (&in))
  31     return 0;
  32
  33   return 1;
  34 }
  35
  36 int
  37 imap_has_starttls (void)
  38 {
  39   char *in, *capa;
  40   int has_tls = 0;
  41
  42   if (!writeln (". CAPABILITY"))
  43     return 0;
  44
  45   if (!readln (&in))
  46     return 0;
  47
  48   has_tls = strstr (in, "STARTTLS") != NULL;
  49
  50   if (!readln (&in))
  51     return 0;
  52
  53   return has_tls;
  54 }
  55
  56 int
  57 imap_starttls (void)
  58 {
  59   char *in;
  60
  61   if (!writeln (". STARTTLS"))
  62     return 0;
  63
  64   if (!readln (&in))
  65     return 0;
  66
  67   return 1;
  68 }
  69
  70 int
  71 imap_select_mechanism (char **mechlist)
  72 {
  73   char *in;
  74
  75   if (args_info.server_flag)
  76     {
  77       if (!args_info.quiet_given)
  78         fprintf (stderr, _("Chose SASL mechanisms:\n"));
  79       if (!readln (&in))
  80         return 0;
  81       *mechlist = in;
  82     }
  83   else
  84     {
  85       if (!writeln (". CAPABILITY"))
  86         return 0;
  87
  88       if (!readln (&in))
  89         return 0;
  90
  91       /* XXX parse IMAP capability line */
  92
  93       *mechlist = in;
  94
  95       if (!readln (&in))
  96         return 0;
  97     }
  98
  99   return 1;
 100 }
 101
 102 int
 103 imap_authenticate (const char *mech)
 104 {
 105   if (args_info.server_flag)
 106     {
 107       if (!args_info.quiet_given)
 108         fprintf (stderr, _("Using mechanism:\n"));
 109       puts (mech);
 110     }
 111   else
 112     {
 113       char input[MAX_LINE_LENGTH];
 114
 115       sprintf (input, ". AUTHENTICATE %s", mech);
 116       if (!writeln (input))
 117         return 0;
 118     }
 119
 120   return 1;
 121 }
 122
 123 int
 124 imap_step_send (const char *data)
 125 {
 126   char input[MAX_LINE_LENGTH];
 127
 128   if (args_info.server_flag)
 129     sprintf (input, "+ %s", data);
 130   else
 131     sprintf (input, "%s", data);
 132   if (!writeln (input))
 133     return 0;
 134
 135   return 1;
 136 }
 137
 138 int
 139 imap_step_recv (char **data)
 140 {
 141   char *p;
 142
 143   if (!readln (data))
 144     return 0;
 145
 146   p = *data;
 147
 148   if (!args_info.server_flag)
 149     {
 150       if (p[0] != '+' || p[1] != ' ')
 151         {
 152           fprintf (stderr, _("error: Server did not return expected SASL "
 153                              "data (it must begin with '+ '):\n%s\n"), p);
 154           return 0;
 155         }
 156
 157       memmove (&p[0], &p[2], strlen (p) - 1);
 158     }
 159
 160   if (p[strlen (p) - 1] == '\n')
 161     p[strlen (p) - 1] = '\0';
 162   if (p[strlen (p) - 1] == '\r')
 163     p[strlen (p) - 1] = '\0';
 164
 165   return 1;
 166 }
 167
 168 int
 169 imap_auth_finish (void)
 170 {
 171   char *in;
 172
 173   if (!readln (&in))
 174     return 0;
 175
 176   return 1;
 177 }
 178
 179 int
 180 imap_logout (void)
 181 {
 182   char *in;
 183
 184   if (!writeln (". LOGOUT"))
 185     return 0;
 186
 187   /* read "* BYE ..." */
 188   if (!readln (&in))
 189     return 0;
 190
 191   free (in);
 192
 193   /* read ". OK ..." */
 194   if (!readln (&in))
 195     return 0;
 196
 197   free (in);
 198
 199   return 1;
 200 }