Cross Reference: /src/usr.sbin/inetd/ratelimit.c

History log of /src/usr.sbin/inetd/ratelimit.c
Revision	Date	Author	Comments
1.3	19-Sep-2025	mrg	fix a couple of "allocate too little" issues GCC 14 pointed out. both ruptime and inetd allocate a less-than-struct-sized space and assign it to a struct pointer. neither of them actually use more than the allocated memory, but this is still dodgy and technically wrong. just allocate the right size.
1.2	12-Oct-2021	rillig	inetd: remove trailing whitespace, add space after 'if' and 'for' No functional change.
1.1	12-Oct-2021	christos	PR/56448: Solomon Ritzow: Various improvements. Rate limiting code has been moved to ratelimit.c. I renamed clear_ip_list to rl_clear_ip_list and broke the code up into more functions. I have also made the per-IP rate limiting allocation more efficient. IP addresses are now stored in their network format instead of a string from getnameinfo (see inetd.h struct rl_ip_node). malloc calls use only the space needed by the structure by using offsetof on union members (I suppose this can be a bit dangerous if not done correctly...). Per-IP rate limiting still supports textual comparison using getnameinfo for address families other than AF_INET and AF_INET6, but I don't think there are any that are actually compatible or used by inetd (I haven't tested UNIX sockets with a remote bound to another file, but I did test using IPv6 with the textual format by commenting out the IPv6 specific code, and it works properly). Still potentially handy for the future. The IP node list (se_rl_ip_list) now uses the <sys/queue.h> SLIST macros instead of a custom list. I've broken rl_process up into helper functions for each type of rate limiting and created a separate function for address stringification, for use with printouts from the -d flag. I tried to reduce stack memory use by moving printing code involving string buffers into separate functions. I haven't tested rl_ipv6_eq on a 32-bit system. The code for the positional syntax has also been moved to parse.c. Function try_biltin has been added to remove parse.c:parse_server's dependency on the biltin structure definition. File inetd.h has been updated with the proper function prototypes, and the servtab structure has been update with the new IP node SLIST. I also moved things around a bit. The way we (a peer and myself) formatted inetd.h previously was somewhat confusing. Function and global variable prototypes are now organized by the source file they are defined in. I also added a -f flag that I saw in another problem report (https://gnats.netbsd.org/12823) that I thought could be useful. It runs inetd in the foreground but without debug printouts or SO_DEBUG. I'm not completely sure about the line "if (foreground) setsid()" that I changed from "if (debug) setsid()".

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