mail.c

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** use mailer to send mail about message                                     **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 #include "main.h"
  13
  14 static const char *months[] = {
  15         "January", "February", "March", "April", "Mai", "June", "July",
  16         "August", "September", "October", "November", "December"
  17 };
  18
  19
  20 /*
  21  * create mail with or without sample
  22  * the process creates forks to keep pbx running
  23  */
  24 struct mail_args {
  25         char    email[128];
  26         char    filename[256];
  27         int     year;
  28         int     mon;
  29         int     mday;
  30         int     hour;
  31         int     min;
  32         char    callerid[64];
  33         char    callerintern[32];
  34         char    callername[64];
  35         char    terminal[32];
  36 };
  37
  38 static void *mail_child(void *arg)
  39 {
  40         struct mail_args *args = (struct mail_args *)arg;
  41         char *email = args->email;
  42         char *filename = args->filename;
  43         int year = args->year;
  44         int mon = args->mon;
  45         int mday = args->mday;
  46         int hour = args->hour;
  47         int min = args->min;
  48         char *callerid = args->callerid;
  49         char *callerintern = args->callerintern;
  50         char *callername = args->callername;
  51         char *terminal = args->terminal;
  52
  53         char command[128];
  54         char buffer[256];
  55         char rbuf[54];
  56         FILE *ph;
  57         int fh;
  58         unsigned char e1, e2, e3;
  59         int i, n, cnt;
  60         unsigned char base64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
  61         struct sched_param schedp;
  62         int ret;
  63
  64         PDEBUG(DEBUG_EPOINT, "child process started for sending a mail\n");
  65
  66         /* lower priority to keep pbx running fluently */
  67         if (options.schedule > 0) {
  68                 memset(&schedp, 0, sizeof(schedp));
  69                 schedp.sched_priority = 0;
  70                 ret = sched_setscheduler(0, SCHED_OTHER, &schedp);
  71                 if (ret < 0) {
  72                         PERROR("Scheduling to normal priority failed (errno = %d).\nExitting child process...\n", errno);
  73                         goto done;
  74                 }
  75         }
  76
  77         /* open process */
  78         SPRINT(command, "%s -f%s %s", SENDMAIL, options.email, email);
  79         if ((ph = popen(command, "w")) < 0) {
  80                 PERROR("Cannot send mail using command '%s'\n", command);
  81                 goto done;
  82         }
  83
  84         /* send header */
  85         fprintf(ph, "MIME-Version: 1.0\n");
  86         fprintf(ph, "Content-Type: multipart/mixed;\n\tboundary=\"next_part\"\n");
  87         fprintf(ph, "From: %s <%s>\n", NAME, options.email);
  88         fprintf(ph, "To: %s\n", email);
  89         fprintf(ph, "Subject: Message from '%s' recorded.\n\n", callerid);
  90
  91         /* send message */
  92         fprintf(ph, "This is a MIME-encapsulated message\n--next_part\n");
  93         fprintf(ph, "Content-Type: text/plain; charset=us-ascii\nContent-Transfer-Encoding: 7bit\n\n");
  94         fprintf(ph, "\nThe voice box of %s has recorded a message:\n\n * extension: %s\n * from: %s", NAME, terminal, callerid);
  95         if (callerintern[0])
  96                 fprintf(ph, " (intern %s)", callerintern);
  97         if (callername[0])
  98                 fprintf(ph, " %s", callername);
  99         fprintf(ph, "\n * date: %s %d %d %d:%02d\n\n", months[mon], mday, year+1900, hour, min);
 100
 101         /* attach audio file */
 102         if (filename[0]) {
 103             if ((fh = open(filename, O_RDONLY))) {
 104                 while(strchr(filename, '/'))
 105                         filename = strchr(filename, '/')+1;
 106                 fprintf(ph, "--next_part\n");
 107                 if (strlen(filename) >= 4)
 108                 if (!strcasecmp(filename+strlen(filename)-4, ".wav"))
 109                         fprintf(ph, "Content-Type: audio/x-wav;\n\tname=\"%s\"\n", filename);
 110                 fprintf(ph, "Content-Transfer-Encoding: base64\nContent-Disposition: inline;\n\tfilename=\"%s\"\n\n", filename);
 111
 112                 /* stream from disk and encode */
 113                 while(42) {
 114                         /* read exactly one line */
 115                         cnt = read(fh, rbuf, 54);
 116                         if (cnt <= 0)
 117                                 break;
 118                         /* encode */
 119                         n = cnt;
 120                         while (n%3) {
 121                                 rbuf[n] = 0;
 122                                 n++;
 123                         }
 124                         n = n/3;
 125                         i = 0;
 126                         while(i<n) {
 127                                 e1 = rbuf[i+i+i];
 128                                 e2 = rbuf[i+i+i+1];
 129                                 e3 = rbuf[i+i+i+2];
 130                                 buffer[(i<<2)+3] = base64[e3 & 0x3f];
 131                                 buffer[(i<<2)+2] = base64[((e3>>6)+(e2<<2)) & 0x3f];
 132                                 buffer[(i<<2)+1] = base64[((e2>>4)+(e1<<4)) & 0x3f];
 133                                 buffer[i<<2] = base64[e1 >> 2];
 134                                 i++;
 135                         }
 136                         if ((cnt%3) > 0)
 137                                 buffer[(i<<2)-1] = '=';
 138                         if ((cnt%3) == 1)
 139                                 buffer[(i<<2)-2] = '=';
 140                         buffer[(i<<2)] = '\n';
 141                         buffer[(i<<2)+1] = '\0';
 142                         /* write */
 143                         fprintf(ph, "%s", buffer);
 144                 }
 145
 146                 fprintf(ph, "\n\n");
 147                 close(fh);
 148             } else {
 149                 SPRINT(buffer, "-Error- Failed to read audio file: '%s'.\n\n", filename);
 150                 fprintf(ph, "%s", buffer);
 151                 PERROR("%s", buffer);
 152             }
 153         }
 154
 155         /* finish mail */
 156         fprintf(ph, ".\n");
 157
 158         /* wait for mail to be sent and close process */
 159         pclose(ph);
 160
 161         done:
 162         PDEBUG(DEBUG_EPOINT, "child process done for sending a mail\n");
 163
 164         /* exit process */
 165         FREE(args, sizeof(struct mail_args));
 166         amemuse--;
 167         return(NULL);
 168 }
 169
 170 void send_mail(char *filename, char *callerid, char *callerintern, char *callername, char *vbox_email, int vbox_year, int vbox_mon, int vbox_mday, int vbox_hour, int vbox_min, char *terminal)
 171 {
 172         struct mail_args *arg;
 173         pthread_t tid;
 174
 175         arg = (struct mail_args *)MALLOC(sizeof(struct mail_args));
 176         amemuse++;
 177
 178         SCPY(arg->email, vbox_email);
 179         SCPY(arg->filename, filename);
 180         arg->year = vbox_year;
 181         arg->mon = vbox_mon;
 182         arg->mday = vbox_mday;
 183         arg->hour = vbox_hour;
 184         arg->min = vbox_min;
 185         SCPY(arg->callerid, callerid);
 186         SCPY(arg->callerintern, callerintern);
 187         SCPY(arg->callername, callername);
 188         SCPY(arg->terminal, terminal);
 189
 190         if ((pthread_create(&tid, NULL, mail_child, arg)<0)) {
 191                 PERROR("failed to create mail-thread.\n");
 192                 return;
 193         }
 194
 195         PDEBUG(DEBUG_EPOINT, "EPOINT '%s' send mail: child process created for sending a mail\n", terminal);
 196 }
 197