cc    -c -o gopher.filter.dpi.o gopher.filter.dpi.c
gopher.filter.dpi.c:222:36: warning: field width should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
  222 |         printf("<tr><td>%s</td><td><pre>%*s<a href=\"", icon(type), indent, "");
      |                                         ~~^                         ~~~~~~
gopher.filter.dpi.c:256:20: warning: field width should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
  256 |         printf("\"><pre>%*s", indent, "");
      |                         ~~^   ~~~~~~
gopher.filter.dpi.c:257:14: warning: field width should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
  257 |         printf("\n%*s<input name=__gopher__query__ size=72 placeholder=\"", indent, "");
      |                   ~~^                                                       ~~~~~~
gopher.filter.dpi.c:270:36: warning: field width should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
  270 |         printf("<tr><td>%s</td><td><pre>%*s<a href=\"telnet://", icon(type), indent, "");
      |                                         ~~^                                  ~~~~~~
4 warnings generated.
cc    -c -o io.o io.c
cc    -c -o dpi.o dpi.c
dpi.c:19:47: warning: format specifies type 'unsigned int *' but the argument has type 'char *' [-Wformat]
   19 |         rc = sscanf(buf, "<cmd='auth' msg='%4x' '>", key);
      |                                            ~~~       ^~~
      |                                            %3s
dpi.c:26:35: warning: format specifies type 'unsigned int *' but the argument has type 'char *' [-Wformat]
   26 |         rc = sscanf(keys, "%*d %4x' '>", local_key);
      |                                ~~~       ^~~~~~~~~
      |                                %3s
dpi.c:27:34: warning: field precision should have type 'int', but argument has type 'ssize_t' (aka 'long') [-Wformat]
   27 |         if (rc < 0) err(1, "comm key: %.*s", sz, keys);
      |                                       ~~^~   ~~
dpi.c:28:35: warning: field precision should have type 'int', but argument has type 'ssize_t' (aka 'long') [-Wformat]
   28 |         if (rc < 1) errx(1, "comm key: %.*s", sz, keys);
      |                                        ~~^~   ~~
dpi.c:18:2: warning: array index 30 is past the end of the array (that has type 'char[30]') [-Warray-bounds]
   18 |         buf[30] = '\0';
      |         ^   ~~
dpi.c:10:2: note: array 'buf' declared here
   10 |         char buf[30];
      |         ^
dpi.c:41:31: warning: field precision should have type 'int', but argument has type 'unsigned long' [-Wformat]
   41 |                 err(1, "bad open_url cmd: %.*s", sizeof(buf), buf);
      |                                           ~~^~   ~~~~~~~~~~~
dpi.c:51:26: warning: field precision should have type 'int', but argument has type 'size_t' (aka 'unsigned long') [-Wformat]
   51 |                 err(1, "bad url end: %.*s", len, url_buf);
      |                                      ~~^~   ~~~
7 warnings generated.
cc   gopher.filter.dpi.o io.o dpi.o   -o gopher.filter.dpi
ld: warning: gopher.filter.dpi.c(gopher.filter.dpi.o:(respond)): warning: strcpy() is almost always misused, please use strlcpy()