Module: kamailio Branch: master Commit: 4935196ee8ce1d99e77c614aaa0131a1972580ed URL: https://github.com/kamailio/kamailio/commit/4935196ee8ce1d99e77c614aaa0131a1...

Author: Henning Westerholt hw@gilawa.com Committer: Henning Westerholt hw@gilawa.com Date: 2025-06-18T11:10:02Z

lrkproxy: improve randomness of cookie by using PNRG and random sequence numbers

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Modified: src/modules/lrkproxy/lrkproxy.c

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Diff: https://github.com/kamailio/kamailio/commit/4935196ee8ce1d99e77c614aaa0131a1... Patch: https://github.com/kamailio/kamailio/commit/4935196ee8ce1d99e77c614aaa0131a1...

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diff --git a/src/modules/lrkproxy/lrkproxy.c b/src/modules/lrkproxy/lrkproxy.c index bc0a83f4e23..ef6a347105b 100644 --- a/src/modules/lrkproxy/lrkproxy.c +++ b/src/modules/lrkproxy/lrkproxy.c @@ -77,6 +77,7 @@ #include "../../core/dset.h" #include "../../core/route.h" #include "../../core/kemi.h" +#include "../../core/rand/fastrand.h" #include "../../modules/tm/tm_load.h" #include "lrkproxy.h" #include "lrkproxy_hash.h" @@ -158,7 +159,6 @@ static void mod_destroy(void); static int lrkproxy_disable_tout = 60; static int lrkproxy_retr = 5; static int lrkproxy_tout = 1; -static pid_t mypid; static unsigned int myseqn = 0; //static str nolrkproxy_str = str_init("a=nolrkproxy:yes"); //static str extra_id_pv_param = {NULL, 0}; @@ -668,9 +668,10 @@ static int child_init(int rank) return 0; }

- /* Iterate known LRK proxies - create sockets */ - mypid = getpid(); + /* random start value for for cookie sequence number */ + myseqn = fastrand();

+ /* Iterate known RTP proxies - create sockets */ lrkp_socks = (int *)pkg_malloc(sizeof(int) * lrkp_no); if(lrkp_socks == NULL) { LM_ERR("no more pkg memory\n"); @@ -791,7 +792,7 @@ static char *gencookie(void) { static char cook[34];

- sprintf(cook, "%d_%u ", (int)mypid, myseqn); + sprintf(cook, "%d_%u ", fastrand(), myseqn); myseqn++; return cook; }