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Comment:Add support for TOP and CAPA to pop3d.
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SHA3-256:2c18ed076e008633641ff49d4ca0e1787f04496b3273307eeb66724a750a51d0
User & Date: drh 2018-07-18 02:09:33
Context
2018-07-18
02:14
Enhance the pop3 TOP command so that the second argument can be zero. check-in: 64493163 user: drh tags: trunk
02:09
Add support for TOP and CAPA to pop3d. check-in: 2c18ed07 user: drh tags: trunk
01:41
Fix a harmless compiler warning. check-in: 2332efb7 user: drh tags: trunk
Changes
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Changes to src/smtp.c. 

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**                        before entering the chroot jail.
*/
void pop3d_command(void){
  char *zDbName;
  char *zA1, *zA2, *zCmd, *z;
  int inAuth = 1;
  int i;
  FILE *pLog;
  const char *zDir;
  Stmt q;
  char zIn[1000];
  char zUser[100];
  zDir = find_option("logdir",0,1);
  if( zDir ){
    char *zFile = file_time_tempname(zDir, ".txt");
................................................................................
  pop3_print(pLog, "+OK POP3 server ready");
  while( fgets(zIn, sizeof(zIn), stdin) ){
    if( pLog ) fprintf(pLog, "C: %s", zIn);
    zCmd = zIn;
    zA1 = pop3d_arg(zCmd);
    zA2 = zA1 ? pop3d_arg(zA1) : 0;
    for(i=0; zCmd[i]; i++){ zCmd[i] = fossil_tolower(zCmd[i]); }












    if( inAuth ){
      if( strcmp(zCmd,"user")==0 ){
        if( zA1==0 || zA2!=0 ) goto cmd_error;
        sqlite3_snprintf(sizeof(zUser),zUser,"%s",zA1);
        goto cmd_ok;
      }
      if( strcmp(zCmd,"pass")==0 ){
................................................................................
                       db_column_int(&q,0), db_column_int(&q,1));
          }
          pop3_print(pLog, ".");
        }
        db_finalize(&q);
        continue;
      }
      if( strcmp(zCmd,"retr")==0 ){
        Blob all, line;
        int nLine = 0;


        if( zA1==0 ) goto cmd_error;


        z = db_text(0, "SELECT decompress(emailblob.etxt) "
                       "  FROM emailblob, pop3"
                       " WHERE emailblob.emailid=pop3.emailid"
                       "   AND pop3.id=%d AND NOT pop3.isDel",
                       atoi(zA1));
        if( z==0 ) goto cmd_error;
        pop3_print(pLog, "+OK");
        blob_init(&all, z, -1);
        while( blob_line(&all, &line) ){
          if( blob_buffer(&line)[0]=='.' ){

            fputc('.', stdout);


          }
          fwrite(blob_buffer(&line), 1, blob_size(&line), stdout);
          nLine++;

        }
        if( pLog ) fprintf(pLog, "S: # %d lines of content\n", nLine);
        pop3_print(pLog, ".");
        fossil_free(z);
        blob_reset(&all);
        blob_reset(&line);
        fflush(stdout);
................................................................................
        db_multi_exec("UPDATE pop3 SET isDel=1 WHERE id=%d",atoi(zA1));
        goto cmd_ok;
      }
      if( strcmp(zCmd,"rset")==0 ){
        db_multi_exec("UPDATE pop3 SET isDel=0");
        goto cmd_ok;
      }
      if( strcmp(zCmd,"top")==0 ){
        goto cmd_error;
      }
      if( strcmp(zCmd,"uidl")==0 ){
        if( zA1 ){
          db_prepare(&q, "SELECT id, emailid FROM pop3"
                         " WHERE id=%d AND NOT isDel", atoi(zA1));
          if( db_step(&q)==SQLITE_ROW ){
            pop3_print(pLog, "+OK %d %d",
                       db_column_int(&q,0), db_column_int(&q,1));








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**                        before entering the chroot jail.
*/
void pop3d_command(void){
  char *zDbName;
  char *zA1, *zA2, *zCmd, *z;
  int inAuth = 1;
  int i;
  FILE *pLog = 0;
  const char *zDir;
  Stmt q;
  char zIn[1000];
  char zUser[100];
  zDir = find_option("logdir",0,1);
  if( zDir ){
    char *zFile = file_time_tempname(zDir, ".txt");
................................................................................
  pop3_print(pLog, "+OK POP3 server ready");
  while( fgets(zIn, sizeof(zIn), stdin) ){
    if( pLog ) fprintf(pLog, "C: %s", zIn);
    zCmd = zIn;
    zA1 = pop3d_arg(zCmd);
    zA2 = zA1 ? pop3d_arg(zA1) : 0;
    for(i=0; zCmd[i]; i++){ zCmd[i] = fossil_tolower(zCmd[i]); }
    if( strcmp(zCmd,"capa")==0 ){
      static const char *azCap[] = {
          "TOP", "USER", "UIDL",
      };
      int i;
      pop3_print(pLog, "+OK");
      for(i=0; i<sizeof(azCap)/sizeof(azCap[0]); i++){
        pop3_print(pLog, azCap[i]);
      }
      pop3_print(pLog, ".");
      continue;
    }
    if( inAuth ){
      if( strcmp(zCmd,"user")==0 ){
        if( zA1==0 || zA2!=0 ) goto cmd_error;
        sqlite3_snprintf(sizeof(zUser),zUser,"%s",zA1);
        goto cmd_ok;
      }
      if( strcmp(zCmd,"pass")==0 ){
................................................................................
                       db_column_int(&q,0), db_column_int(&q,1));
          }
          pop3_print(pLog, ".");
        }
        db_finalize(&q);
        continue;
      }
      if( strcmp(zCmd,"retr")==0 || strcmp(zCmd,"top")==0 ){
        Blob all, line;
        int nLine = 0;
        int iLimit;
        int hdrSeen = 0;
        if( zA1==0 ) goto cmd_error;
        iLimit = zA2 ? atoi(zA2) : 2147483647;
        if( iLimit<=0 ) goto cmd_error;
        z = db_text(0, "SELECT decompress(emailblob.etxt) "
                       "  FROM emailblob, pop3"
                       " WHERE emailblob.emailid=pop3.emailid"
                       "   AND pop3.id=%d AND NOT pop3.isDel",
                       atoi(zA1));
        if( z==0 ) goto cmd_error;
        pop3_print(pLog, "+OK");
        blob_init(&all, z, -1);
        while( iLimit && blob_line(&all, &line) ){
          char c = blob_buffer(&line)[0];
          if( c=='.' ){
            fputc('.', stdout);
          }else if( c=='\r' || c=='\n' ){
            hdrSeen = 1;
          }
          fwrite(blob_buffer(&line), 1, blob_size(&line), stdout);
          nLine++;
          if( hdrSeen ) iLimit--;
        }
        if( pLog ) fprintf(pLog, "S: # %d lines of content\n", nLine);
        pop3_print(pLog, ".");
        fossil_free(z);
        blob_reset(&all);
        blob_reset(&line);
        fflush(stdout);
................................................................................
        db_multi_exec("UPDATE pop3 SET isDel=1 WHERE id=%d",atoi(zA1));
        goto cmd_ok;
      }
      if( strcmp(zCmd,"rset")==0 ){
        db_multi_exec("UPDATE pop3 SET isDel=0");
        goto cmd_ok;
      }



      if( strcmp(zCmd,"uidl")==0 ){
        if( zA1 ){
          db_prepare(&q, "SELECT id, emailid FROM pop3"
                         " WHERE id=%d AND NOT isDel", atoi(zA1));
          if( db_step(&q)==SQLITE_ROW ){
            pop3_print(pLog, "+OK %d %d",
                       db_column_int(&q,0), db_column_int(&q,1));

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