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| author | Dmitry Kozlov <xeb@mail.ru> | 2012-12-10 00:30:09 +0400 |
|---|---|---|
| committer | Kozlov Dmitry <xeb@mail.ru> | 2013-01-24 23:55:37 +0400 |
| commit | 48502707eb16f0ed0d4aa46bac7c18fba953c7bc (patch) | |
| tree | f18e5568b93ec951d6bbd593d53df64433eba5c6 /accel-pppd/session.c | |
| parent | 433d988f0d81b833bf5654dc10d55722b426f8ec (diff) | |
| download | accel-ppp-xebd-48502707eb16f0ed0d4aa46bac7c18fba953c7bc.tar.gz accel-ppp-xebd-48502707eb16f0ed0d4aa46bac7c18fba953c7bc.zip | |
implemented different sessionid length and urandom source
Diffstat (limited to 'accel-pppd/session.c')
| -rw-r--r-- | accel-pppd/session.c | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/accel-pppd/session.c b/accel-pppd/session.c index 5c77683..fece089 100644 --- a/accel-pppd/session.c +++ b/accel-pppd/session.c @@ -23,8 +23,12 @@ #include "mempool.h" #include "memdebug.h" +#define SID_SOURCE_SEQ 0 +#define SID_SOURCE_URANDOM 1 + static int conf_sid_ucase; static int conf_single_session = -1; +static int conf_sid_source; pthread_rwlock_t __export ses_lock = PTHREAD_RWLOCK_INITIALIZER; __export LIST_HEAD(ses_list); @@ -213,20 +217,31 @@ void ap_shutdown_soft(void (*cb)(void)) static void generate_sessionid(struct ap_session *ses) { - unsigned long long sid; - + if (conf_sid_source == SID_SOURCE_SEQ) { + unsigned long long sid; #if __WORDSIZE == 32 - spin_lock(&seq_lock); - sid = ++seq; - spin_unlock(&seq_lock); + spin_lock(&seq_lock); + sid = ++seq; + spin_unlock(&seq_lock); #else - sid = __sync_add_and_fetch(&seq, 1); + sid = __sync_add_and_fetch(&seq, 1); #endif - if (conf_sid_ucase) - sprintf(ses->sessionid, "%016llX", sid); - else - sprintf(ses->sessionid, "%016llx", sid); + if (conf_sid_ucase) + sprintf(ses->sessionid, "%016llX", sid); + else + sprintf(ses->sessionid, "%016llx", sid); + } else { + uint8_t sid[AP_SESSIONID_LEN/2]; + int i; + read(urandom_fd, sid, AP_SESSIONID_LEN/2); + for (i = 0; i < AP_SESSIONID_LEN/2; i++) { + if (conf_sid_ucase) + sprintf(ses->sessionid + i*2, "%02X", sid[i]); + else + sprintf(ses->sessionid + i*2, "%02x", sid[i]); + } + } } int __export ap_session_read_stats(struct ap_session *ses, struct rtnl_link_stats *stats) @@ -328,6 +343,17 @@ static void load_config(void) conf_single_session = 1; } else conf_single_session = -1; + + opt = conf_get_opt("common", "sid-source"); + if (opt) { + if (strcmp(opt, "seq") == 0) + conf_sid_source = SID_SOURCE_SEQ; + else if (strcmp(opt, "urandom") == 0) + conf_sid_source = SID_SOURCE_URANDOM; + else + log_error("unknown sid-source\n"); + } else + conf_sid_source = SID_SOURCE_SEQ; } static void init(void) |