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Add support for arc4random

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If arc4random is present it will be used over the srand/rand interface.
This fixes some warnings in OpenBSD-current.
This commit is contained in:
Federico G. Schwindt 2013-10-16 11:15:27 +01:00
parent ea26fd2840
commit 17589534d0
6 changed files with 30 additions and 2 deletions
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5
configure.ng
View File

@ -187,8 +187,9 @@ AC_CHECK_FUNCS([ \
# Optional functions
AC_CHECK_FUNCS_ONCE([ \
gai_strerror getaddrinfo getnameinfo inet_aton sigaction sigprocmask \
snprintf vsnprintf strdup strndup strlcpy strlcat strtok_r waitpid])
arc4random gai_strerror getaddrinfo getnameinfo inet_aton sigaction \
sigprocmask snprintf vsnprintf strdup strndup strlcpy strlcat strtok_r \
waitpid])
# -- Configuration options --

4
src/ngircd/conf.c
View File

@ -533,7 +533,11 @@ Conf_UnsetServer( CONN_ID Idx )
/* "Short" connection, enforce "ConnectRetry"
* but randomize it a little bit: 15 seconds. */
Conf_Server[i].lasttry =
#ifdef HAVE_ARC4RANDOM
t + (arc4random() % 15);
#else
t + rand() / (RAND_MAX / 15);
#endif
}
}
}

4
src/ngircd/irc-login.c
View File

@ -242,7 +242,11 @@ IRC_NICK( CLIENT *Client, REQUEST *Req )
#ifndef STRICT_RFC
if (Conf_AuthPing) {
#ifdef HAVE_ARC4RANDOM
Conn_SetAuthPing(Client_Conn(Client), arc4random());
#else
Conn_SetAuthPing(Client_Conn(Client), rand());
#endif
IRC_WriteStrClient(Client, "PING :%ld",
Conn_GetAuthPing(Client_Conn(Client)));
LogDebug("Connection %d: sent AUTH PING %ld ...",

8
src/ngircd/ngircd.c
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@ -613,6 +613,13 @@ NGIRCd_getNobodyID(uid_t *uid, gid_t *gid )
#endif
#ifdef HAVE_ARC4RANDOM
static void
Random_Init(void)
{
}
#else
static bool
Random_Init_Kern(const char *file)
{
@ -642,6 +649,7 @@ Random_Init(void)
return;
srand(rand() ^ (unsigned)getpid() ^ (unsigned)time(NULL));
}
#endif
/**

6
src/ngircd/proc.c
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@ -50,7 +50,9 @@ GLOBAL pid_t
Proc_Fork(PROC_STAT *proc, int *pipefds, void (*cbfunc)(int, short), int timeout)
{
pid_t pid;
#ifndef HAVE_ARC4RANDOM
unsigned int seed;
#endif
assert(proc != NULL);
assert(pipefds != NULL);
@ -62,7 +64,9 @@ Proc_Fork(PROC_STAT *proc, int *pipefds, void (*cbfunc)(int, short), int timeout
return -1;
}
#ifndef HAVE_ARC4RANDOM
seed = (unsigned int)rand();
#endif
pid = fork();
switch (pid) {
case -1:
@ -73,7 +77,9 @@ Proc_Fork(PROC_STAT *proc, int *pipefds, void (*cbfunc)(int, short), int timeout
return -1;
case 0:
/* New child process: */
#ifndef HAVE_ARC4RANDOM
srand(seed ^ (unsigned int)time(NULL) ^ getpid());
#endif
Signals_Exit();
signal(SIGTERM, Proc_GenericSignalHandler);
signal(SIGALRM, Proc_GenericSignalHandler);

5
src/tool/tool.c
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@ -144,11 +144,16 @@ ngt_RandomStr(char *String, const size_t len)
assert(String != NULL);
gettimeofday(&t, NULL);
#ifndef HAVE_ARC4RANDOM
srand((unsigned)(t.tv_usec * t.tv_sec));
for (i = 0; i < len; ++i) {
String[i] = chars[rand() % (sizeof(chars) - 1)];
}
#else
for (i = 0; i < len; ++i)
String[i] = chars[arc4random() % (sizeof(chars) - 1)];
#endif
String[len] = '\0';
return String;